Integrated Project by Mindelei Wuori
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Crime scene investigation involves documenting conditions at the scene and collecting physical evidence. Police officers secure the scene while the CSI unit documents details and collects evidence. Detectives then investigate further by interviewing witnesses. Careful examination of evidence such as fibers can help link criminals to crimes.
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Physical evidence & CSI ppt
Physical evidence collected from crime scenes can be used to reconstruct the events of a crime. There are several types of evidence including trace evidence, biological evidence, and direct evidence like fingerprints. It is important that evidence is properly documented, collected, packaged, labeled, and maintained in the chain of custody. A thorough search and documentation of the crime scene helps investigators form a hypothesis of what occurred.
Crime investigation
By: Capt. S B Tyagi, FISM, CSC
What makes a serial killer tick? How do forensic experts solve crimes using cutting-edge technology? Who are the men and women that risk their lives to put criminals behind bars?
These questions and more are related to the subject of Crime Investigation. Real crime, real people, real drama - Crime Investigation is the hard work by the true professionals who work meticulously and methodically to solve the mystery behind the crime – motive, the modus-operendai and men involved in crime! Crime Investigation opens the door to crime labs, police archives and courtrooms, providing a behind-the-scenes look at criminal investigations and probing unexplained mysteries.
Physical Evidence at a Crime Scene
Evidence used to resolve an issue can be split into 2 areas - testimonial evidence and physical evidence. The testimonial evidence would be any witnessed accounts of an incident. The physical evidence would refer to any material items that would be present on the crime scene. These items would be presented in an issue or incident to prove or disprove the facts of the issue. What will evidence collected at a scene do for the investigation -
• May prove that a crime has been committed.
• Establish any key elements of a crime.
• Link a suspect with a scene or a victim.
• Establish the identity of a victim or suspect.
• Corroborate verbal witness testimony.
• Exonerate the innocent.
The evidence that is located and recovered at a scene will give the detectives responsible for the investigation leads to work with in the case.
Fs Ch4
Physical evidence found at crime scenes can establish that a crime occurred and link the crime to victims or perpetrators. However, this evidence must be properly recognized, collected, and preserved at the crime scene to be useful. Investigators must handle evidence carefully to prevent contamination and changes, and package each piece separately with information on its origin and chain of custody. Reference samples from suspects are also important to compare to evidence from the crime scene.
Crime Scenc Investigation Evidence Collection
The goal of a crime scene investigation is to recognize, document, and collect evidence. Evidence can be direct, like eyewitness accounts, or circumstantial. Physical evidence includes fingerprints, DNA, and trace evidence. Following Locard's exchange principle, investigators look for transfers between people and objects. Proper documentation through photography, sketching, and note taking is important. Evidence must be properly packaged and maintained in the chain of custody to be useful in reconstructing the crime.
Crime Scene Protocols
Crime scene investigation protocols involve securing the scene, interviewing witnesses, examining the scene to find evidence, photographing the scene and evidence, sketching the layout, and systematically processing the scene to collect physical and testimonial evidence while maintaining a chain of custody. Proper documentation through notes, photos, sketches and video is important for subsequent investigation and presentation in court. Evidence collection includes obvious items as well as microscopic traces, with each item packaged separately to prevent damage or cross-contamination.
Forensics ch 3 notes
The document discusses key aspects of processing a crime scene:
1. Recognition, preservation, identification, comparison, individualization, interpretation, and reconstruction are the seven major activities of forensic investigations.
2. Evidence must be collected, packaged, and maintained in a proper chain of custody. Photographs, sketches, and notes are used to document the crime scene.
3. A crime scene may be searched using line, grid, zone, or wheel/spiral methods depending on the type of scene. The body is processed by the coroner or medical examiner.
1crimescenebasics
The document provides information about crime scenes and evidence collection. It defines key crime scene terms like primary and secondary crime scenes. It describes different types of evidence like testimonial, physical, and trace evidence. It outlines the crime scene investigation process from interviewing witnesses to documenting and processing the scene to collect evidence. It also lists different forensic science disciplines involved in analyzing evidence and the roles of key crime scene personnel.
Crime scene investigator
A forensic nurse applies forensic science and nursing education to collect and preserve evidence, analyze trauma and death-related medical issues, and treat victims. They require nursing education and training as well as experience in areas like evidence collection, documentation, and forensic photography. Forensic nurses work in various specialties like collecting evidence at crime scenes, assessing individuals for court-ordered psychiatric evaluations, and treating victims of crimes.
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Physical evidence collected from crime scenes can be used to reconstruct the events of a crime. There are several types of evidence including trace evidence, biological evidence, and direct evidence like fingerprints. It is important that evidence is properly documented, collected, packaged, labeled, and maintained in the chain of custody. A thorough search and documentation of the crime scene helps investigators form a hypothesis of what occurred.
Crime investigation
By: Capt. S B Tyagi, FISM, CSC
What makes a serial killer tick? How do forensic experts solve crimes using cutting-edge technology? Who are the men and women that risk their lives to put criminals behind bars?
These questions and more are related to the subject of Crime Investigation. Real crime, real people, real drama - Crime Investigation is the hard work by the true professionals who work meticulously and methodically to solve the mystery behind the crime – motive, the modus-operendai and men involved in crime! Crime Investigation opens the door to crime labs, police archives and courtrooms, providing a behind-the-scenes look at criminal investigations and probing unexplained mysteries.
Physical Evidence at a Crime Scene
Evidence used to resolve an issue can be split into 2 areas - testimonial evidence and physical evidence. The testimonial evidence would be any witnessed accounts of an incident. The physical evidence would refer to any material items that would be present on the crime scene. These items would be presented in an issue or incident to prove or disprove the facts of the issue. What will evidence collected at a scene do for the investigation -
• May prove that a crime has been committed.
• Establish any key elements of a crime.
• Link a suspect with a scene or a victim.
• Establish the identity of a victim or suspect.
• Corroborate verbal witness testimony.
• Exonerate the innocent.
The evidence that is located and recovered at a scene will give the detectives responsible for the investigation leads to work with in the case.
Fs Ch4
Physical evidence found at crime scenes can establish that a crime occurred and link the crime to victims or perpetrators. However, this evidence must be properly recognized, collected, and preserved at the crime scene to be useful. Investigators must handle evidence carefully to prevent contamination and changes, and package each piece separately with information on its origin and chain of custody. Reference samples from suspects are also important to compare to evidence from the crime scene.
Crime Scenc Investigation Evidence Collection
The goal of a crime scene investigation is to recognize, document, and collect evidence. Evidence can be direct, like eyewitness accounts, or circumstantial. Physical evidence includes fingerprints, DNA, and trace evidence. Following Locard's exchange principle, investigators look for transfers between people and objects. Proper documentation through photography, sketching, and note taking is important. Evidence must be properly packaged and maintained in the chain of custody to be useful in reconstructing the crime.
Crime Scene Protocols
Crime scene investigation protocols involve securing the scene, interviewing witnesses, examining the scene to find evidence, photographing the scene and evidence, sketching the layout, and systematically processing the scene to collect physical and testimonial evidence while maintaining a chain of custody. Proper documentation through notes, photos, sketches and video is important for subsequent investigation and presentation in court. Evidence collection includes obvious items as well as microscopic traces, with each item packaged separately to prevent damage or cross-contamination.
Forensics ch 3 notes
The document discusses key aspects of processing a crime scene:
1. Recognition, preservation, identification, comparison, individualization, interpretation, and reconstruction are the seven major activities of forensic investigations.
2. Evidence must be collected, packaged, and maintained in a proper chain of custody. Photographs, sketches, and notes are used to document the crime scene.
3. A crime scene may be searched using line, grid, zone, or wheel/spiral methods depending on the type of scene. The body is processed by the coroner or medical examiner.
1crimescenebasics
The document provides information about crime scenes and evidence collection. It defines key crime scene terms like primary and secondary crime scenes. It describes different types of evidence like testimonial, physical, and trace evidence. It outlines the crime scene investigation process from interviewing witnesses to documenting and processing the scene to collect evidence. It also lists different forensic science disciplines involved in analyzing evidence and the roles of key crime scene personnel.
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This document provides information and instructions for processing a crime scene. It outlines the objectives, materials, safety procedures, and tasks involved including making tent cards to mark evidence, photographing and sketching the scene, and taking detailed notes. It also provides information recovered from the crime scene including bodily fluids, fingerprints, injuries, and documents. Finally, it discusses crime scene reconstruction and common search patterns used.
Ci ch 3
The document describes the process for managing crime scenes and investigating crimes in South Africa. It outlines 10 phases for managing a crime scene: from initial reporting to the release of the scene. It also details the command structures for investigations conducted by detectives and forensic scientists. The roles of first responders, crime scene managers, detectives and forensic scientists are defined. Finally, it provides an example of how the type of crime determines which investigative units and forensic science labs are involved.
IMPORTANCE OF CRIME SCENE: COLLECTION & PRESERVATION OF EVIDENCE
The Crime Scene Investigation plays a very crucial role in the criminal investigation
process. Every scene of crime is delicate in nature. Therefore, suitable processing is the
most primary requisite in the criminal investigation proceedings. The students will be
taught the way to process every crime scene differently.
crime scene.pptx
It is the beginning point for obtaining evidence which will be used by the crime scene investigator and the forensic expert
A thorough investigation of the crime scene must be completed
Crime scene is basically a scene of occurrence of crime. It is a place where a particular crime has been committed.
It is starting point for the investigator.
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This was a presentation that was given to provide an over of the processes of crime scene investigation from first responder to laboratory processing.
Crime scene preservation
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Crime Scene Processing
The document provides an overview of crime scene processing, including key principles like Locard's exchange principle and the importance of properly collecting, documenting, and preserving evidence. It discusses establishing boundaries, photographing and diagramming the scene, collecting physical and trace evidence, and maintaining chain of custody for any evidence. Careful and thorough processing following standard protocols is emphasized to avoid compromising potential evidence.
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The document outlines the 4 main steps in investigating a crime scene: 1) Interviewing witnesses, 2) Examining the scene, 3) Documenting the scene through photos and sketches, and 4) Processing the scene for evidence collection. It then provides details on each step, such as using different search patterns to thoroughly examine the scene.
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Physical evidence can include almost any object and is collected and analyzed to help ascertain what happened during a crime. Forensic scientists examine physical evidence to identify substances or compare samples to determine if they have a common origin. While some evidence like fingerprints can be matched to a single source, other evidence can only narrow down the possible sources to a group. As more matching pieces of evidence are found connecting a suspect to a crime scene, the likelihood of their involvement increases.
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The document discusses the processes involved in processing a crime scene, including securing and isolating the scene, photographing and sketching the scene, conducting a systematic search for evidence, collecting and packaging physical evidence while maintaining the chain of custody, and maintaining safety at the crime scene. The goal is to gather all relevant physical evidence and document its original location to aid in reconstruction of events.
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The document provides information about crime scenes and evidence collection. It defines key crime scene terms like primary and secondary crime scenes. It describes different types of evidence like testimonial, physical, and trace evidence. It outlines the crime scene investigation process from interviewing witnesses to documenting and processing the scene to collect evidence. It also lists different forensic science disciplines involved in analyzing evidence and their roles.
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This chapter discusses crime scene investigation and evidence collection. It outlines Locard's exchange principle which states that physical evidence is exchanged between a perpetrator and victim during a crime. It describes the roles of crime scene investigators and different types of evidence like direct, circumstantial, trace, and DNA evidence. It explains the proper procedures for securing a crime scene, collecting, packaging, and documenting the chain of custody of evidence to preserve its integrity for court.
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This document provides guidance on processing crime scenes and securing physical evidence. Key steps include prioritizing medical aid, arresting perpetrators, securing the scene to preserve evidence, taking photographs to document locations and details, creating sketches of the scene, conducting systematic searches, carefully collecting and packaging all potential evidence while maintaining chain of custody, and considering legal and safety issues. Court decisions provide parameters around warrantless searches.
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This document discusses the importance of crime scene investigation, including the collection and preservation of evidence. It emphasizes that physical evidence found at a crime scene can provide crucial details about the how, what, why of a crime and help identify victims and offenders. It outlines best practices for processing a crime scene such as isolating and securing the area, documenting the scene thoroughly, searching methodically for evidence, collecting and packaging evidence maintaining a proper chain of custody, and submitting evidence to a crime lab. The document stresses that following proper protocols in investigating and documenting a crime scene is essential for obtaining factual evidence that can be used to determine the truth and administer justice.
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The document discusses crime scene basics, including definitions of key terms like crime scene, primary crime scene, and secondary crime scene. It describes the different types of evidence that may be collected at a crime scene, such as testimonial, physical, and trace evidence. The document also outlines the personnel that may be involved at a crime scene, such as police officers, crime scene investigators, medical examiners, and detectives. It provides the typical steps an investigator will follow to analyze a crime scene, which are to interview, examine, document, and process. Finally, it lists the seven S's of crime scene investigation.
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This document provides information about processing a crime scene investigation. It discusses establishing what happened at the crime scene through documentation and evidence collection. It outlines the roles of different personnel involved, including the first responding officer, investigators, medical examiner, and crime scene team. It also describes important procedures like securing the scene, conducting searches, documenting with notes, photos, and sketches, and collecting and packaging evidence while maintaining the chain of custody.
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The document describes the process for managing crime scenes and investigating crimes in South Africa. It outlines 10 phases for managing a crime scene: from initial reporting to the release of the scene. It also details the command structures for investigations conducted by detectives and forensic scientists. The roles of first responders, crime scene managers, detectives and forensic scientists are defined. Finally, it provides an example of how the type of crime determines which investigative units and forensic science labs are involved.
IMPORTANCE OF CRIME SCENE: COLLECTION & PRESERVATION OF EVIDENCE
The Crime Scene Investigation plays a very crucial role in the criminal investigation
process. Every scene of crime is delicate in nature. Therefore, suitable processing is the
most primary requisite in the criminal investigation proceedings. The students will be
taught the way to process every crime scene differently.
crime scene.pptx
It is the beginning point for obtaining evidence which will be used by the crime scene investigator and the forensic expert
A thorough investigation of the crime scene must be completed
Crime scene is basically a scene of occurrence of crime. It is a place where a particular crime has been committed.
It is starting point for the investigator.
Forensic Science Introduction
This was a presentation that was given to provide an over of the processes of crime scene investigation from first responder to laboratory processing.
Crime scene preservation
The crime scene is where forensic investigations begin and physical evidence must be carefully collected and preserved. Upon arrival, the scene is documented through photography, sketches, and notes while being secured and searched systematically. Evidence is then packaged with detailed labeling to maintain the strict chain of custody, recording everyone who handles it to ensure its integrity if used in court.
Crime Scene Processing
The document provides an overview of crime scene processing, including key principles like Locard's exchange principle and the importance of properly collecting, documenting, and preserving evidence. It discusses establishing boundaries, photographing and diagramming the scene, collecting physical and trace evidence, and maintaining chain of custody for any evidence. Careful and thorough processing following standard protocols is emphasized to avoid compromising potential evidence.
crime scene investigation
This document provides an overview of crime scene investigation and analysis of forensic evidence. It discusses what constitutes a crime scene and the types of evidence that may be collected, including biological evidence, latent prints, footwear and tire tracks, trace evidence, and firearm evidence. It outlines the basic process of conducting a crime scene investigation and how the evidence is analyzed, with a focus on DNA evidence analysis using techniques like polymerase chain reaction, short tandem repeats, Y-chromosome analysis, and mitochondrial DNA analysis.
CSI and Evidence Collection
This chapter discusses crime scene investigation and evidence collection. It introduces Locard's exchange principle which states that physical evidence is exchanged between a perpetrator and victim/crime scene. It outlines the goals and team members involved in a crime scene investigation. The key steps are securing the scene, separating witnesses, scanning/documenting the scene, searching for evidence, and collecting/packaging evidence maintaining chain of custody. DNA, fingerprints, trace evidence, and other physical/biological evidence can be analyzed to reconstruct the crime.
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This document provides an overview of crime scene investigation techniques. It defines key terms like crime scene, evidence, and chain of custody. It describes the objectives of processing a crime scene like establishing the elements of a crime. It outlines the roles of a crime scene investigation unit and their basic equipment. It discusses procedures for securing, documenting, searching, and collecting evidence from a crime scene while maintaining the integrity of the evidence. These procedures include photographing, sketching, taking detailed notes, and using systematic search patterns to thoroughly examine the scene.
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This document provides an overview of a Year 10 Forensic Science course. It includes learning goals about understanding what forensic science is, the roles of forensic scientists, hazards associated with the field, and collecting evidence. It then discusses what forensic science is, important historical figures, hazards and protective equipment, processing crime scenes through documentation and evidence collection, and types of evidence forensic scientists search for. Search patterns used to thoroughly examine crime scenes are also outlined.
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The document outlines the 4 main steps in investigating a crime scene: 1) Interviewing witnesses, 2) Examining the scene, 3) Documenting the scene through photos and sketches, and 4) Processing the scene for evidence collection. It then provides details on each step, such as using different search patterns to thoroughly examine the scene.
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Physical evidence can include almost any object and is collected and analyzed to help ascertain what happened during a crime. Forensic scientists examine physical evidence to identify substances or compare samples to determine if they have a common origin. While some evidence like fingerprints can be matched to a single source, other evidence can only narrow down the possible sources to a group. As more matching pieces of evidence are found connecting a suspect to a crime scene, the likelihood of their involvement increases.
Forensic Science: Topic 2 crime scene
The document discusses the processes involved in processing a crime scene, including securing and isolating the scene, photographing and sketching the scene, conducting a systematic search for evidence, collecting and packaging physical evidence while maintaining the chain of custody, and maintaining safety at the crime scene. The goal is to gather all relevant physical evidence and document its original location to aid in reconstruction of events.
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The document provides information about crime scenes and evidence collection. It defines key crime scene terms like primary and secondary crime scenes. It describes different types of evidence like testimonial, physical, and trace evidence. It outlines the crime scene investigation process from interviewing witnesses to documenting and processing the scene to collect evidence. It also lists different forensic science disciplines involved in analyzing evidence and their roles.
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This chapter discusses crime scene investigation and evidence collection. It outlines Locard's exchange principle which states that physical evidence is exchanged between a perpetrator and victim during a crime. It describes the roles of crime scene investigators and different types of evidence like direct, circumstantial, trace, and DNA evidence. It explains the proper procedures for securing a crime scene, collecting, packaging, and documenting the chain of custody of evidence to preserve its integrity for court.
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This document provides guidance on processing crime scenes and securing physical evidence. Key steps include prioritizing medical aid, arresting perpetrators, securing the scene to preserve evidence, taking photographs to document locations and details, creating sketches of the scene, conducting systematic searches, carefully collecting and packaging all potential evidence while maintaining chain of custody, and considering legal and safety issues. Court decisions provide parameters around warrantless searches.
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This document discusses the importance of crime scene investigation, including the collection and preservation of evidence. It emphasizes that physical evidence found at a crime scene can provide crucial details about the how, what, why of a crime and help identify victims and offenders. It outlines best practices for processing a crime scene such as isolating and securing the area, documenting the scene thoroughly, searching methodically for evidence, collecting and packaging evidence maintaining a proper chain of custody, and submitting evidence to a crime lab. The document stresses that following proper protocols in investigating and documenting a crime scene is essential for obtaining factual evidence that can be used to determine the truth and administer justice.
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The document discusses crime scene basics, including definitions of key terms like crime scene, primary crime scene, and secondary crime scene. It describes the different types of evidence that may be collected at a crime scene, such as testimonial, physical, and trace evidence. The document also outlines the personnel that may be involved at a crime scene, such as police officers, crime scene investigators, medical examiners, and detectives. It provides the typical steps an investigator will follow to analyze a crime scene, which are to interview, examine, document, and process. Finally, it lists the seven S's of crime scene investigation.
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IMPORTANCE OF CRIME SCENE: COLLECTION & PRESERVATION OF EVIDENCE
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Proper collection and documentation of evidence is essential. Evidence must be sealed in air-tight containers and labeled with case information. Biological evidence needs breathable packaging to dry out and is kept frozen to prevent mold. Evidence is placed in paper bindles that are then sealed in plastic or paper containers with tape and signatures. An evidence log contains case details and a chain of custody. When packaging, an appropriate sized paper fold is used as a bindle to contain the evidence in the center. Controls from victims and scenes are also collected. Crime scenes should be sketched noting body positions, evidence, and measurements from two immobile objects with a scale.
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The document provides an overview of crime scene investigation procedures. It discusses establishing the crime scene perimeter and securing evidence, documenting the scene through photography, sketching, and note taking, conducting systematic searches using standard patterns, collecting, packaging, and maintaining chain of custody of evidence, submitting evidence to labs for analysis, and the roles of various personnel including medical examiners. Crime scene investigation aims to reconstruct events and identify suspects through careful documentation and recognition of physical evidence.
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Crime Scene Basics PowerPoint
The document discusses various aspects of forensic science as it relates to crime scene investigation, including defining key terms like primary and secondary crime scenes, describing different types of evidence like testimonial, physical and trace evidence, outlining the roles of different personnel involved in processing a crime scene like police officers, CSIs, medical examiners and detectives, and providing an overview of the typical crime scene investigation protocol and various forensic science disciplines used in analyzing evidence.
SGP Crime Forensics Presentation
Forensic science has been used for centuries to help solve crimes. Forensic scientists use various scientific methods and technologies to gather evidence at crime scenes and provide analysis to aid law enforcement investigations. The forensic process involves documenting the crime scene thoroughly through photography, sketching, and collecting potential evidence which is then analyzed at crime labs and can be used in court to help determine what happened and who was responsible. It requires meticulous observation, documentation, analysis skills and the ability to clearly present forensic findings and conclusions.
Crimescenebasics
The document discusses forensic science and crime scene investigation. It defines key crime scene terminology like primary crime scene and secondary crime scene. It describes the different types of evidence like testimonial, physical, and trace evidence. It outlines the roles of personnel involved at a crime scene like police officers, crime scene investigators, medical examiners, and detectives. It also explains the typical crime scene investigation protocol of interviewing, examining, documenting, and processing the scene to identify and collect evidence. Finally, it lists several forensic science disciplines used to analyze evidence in a crime lab, such as drug chemistry, biology/DNA, toxicology, latent prints, and questioned documents.
CRJS406-DB3NameClassDateProfessor.docx
CRJS406-DB3
Name
Class
Date
Professor
CRJS406-DB3
Evidence is the foundation of all criminal cases. Without evidence there is no way to show the court who committed the crime and how this determination was made. Evidence assists police in forming a conclusion about who committed the crime and locating who was responsible. For example a broken window would point to the crime of burglary and a fingerprint left on the broken window pane would physical evidence showing the criminal suspect was present at the crime scene. Evidence is the material objects presented at court to show the guilt of an offender and to show the court how they defendant committed the crime.
Evidence is the pieces of the puzzle that are put together in order to support or disprove a claim. For example a prosecutor charges a person with burglary. In order to show they are guilty of the crime there must be evidence pointing to the guilt of the criminal defendant. Without evidence there is no way to prove beyond a reasonable doubt the guilt of the criminal defendant. If the guilt of the defendant cannot be proven through evidence then the burglar will be found not guilty even if they were guilty of committing the crime.
The primary role of evidence in a criminal investigation is to show the guilt or innocence of the criminal offender. The prosecution is not the only member of the court that introduced evidence. Evidence is also introduced by the defense. The defense is the criminal defendant and their attorney. Evidence is used to show why a criminal is guilty or why a criminal defendant could not have committed the crime. Without evidence there is no way to show guilt or innocence (Kaisler, 2008). Since evidence is so important so is the collection of evidence. Evidence not collected properly or properly documented could be excluded from the court process.
Documentation is the most important step in the gathering of any evidence at a crime scene. Documentation allows the state to prove to the court that the evidence located was located at the crime scene. If the state cannot show the court where the evidence was located, who collected the evidence, and how the evidence was analyzed. Documentation begins with the walk through and the sketch followed by photographing the evidence and labeling each piece of evidence with information about the crime scene investigator and when, where, and how the evidence as collected.
Physical evidence is crucial in proving the guilt of a criminal offender but it is also used to paint a picture of what occurred at the scene and identifies the potential motive of the offender. Physical evidence shows who could have committed the crime and supports the conclusion made by the prosecutor. Evidence is the proof. Evidence supports opinions and allow criminal investigator to draw conclusions.
References
Kaisler, L. (2008). What is Evidence? Retrieved October 22, 2013 from
http://21cif.com/tutorials/micro.
Forensic Evidence
Forensic anthropology plays an important role in disaster situations by assisting in victim identification when bodies are decomposed or fragmented. Investigators use anthropological analysis of bones and other remains to determine characteristics like age, sex, ancestry to help identify John Doe victims. Maintaining a strict chain of custody for any remains and evidence recovered is also crucial for forensic anthropology to be effective and for findings to be admissible in court.
Forensic Science
Forensic science is the application of science to address legal matters. It involves using various scientific techniques to analyze evidence found at crime scenes. Some key areas of forensic science include analyzing fingerprints, DNA, ballistics, toxicology, pathology, entomology, questioned documents, and trace evidence. The goal is to apply scientific processes and reasoning to help determine exactly what happened in criminal cases.
Evidence Tracking Evidence Tracking.docx
Evidence Tracking
Evidence Tracking
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Class
Date
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Evidence Tracking
Evidence is essential to solving any case and proving the guilt of an offender in a court of law. Once a crime has been reported the first step of the responding officer is to secure the crime scene to ensure it is properly preserved until forensic investigators can arrive on the scene. The evidence collection process begins with thoroughly documenting the crime scene. The process begins with a walk through of the crime scene in order to identify potential evidence and to develop an idea of what occurred at the crime scene. Once the evidence has been identified the evidence collection process will begin with collecting evidence that is fragile or easily damaged or destroyed.
In the rape scenario DNA evidence is crucial to proving a crime occurred and showing the guilt of the offender. Rape cases are hard to prosecute and require physical evidence to prove the act of rape even occurred. In a majority of cases it is the word of the victim against the word of the perpetrator. DNA evidence can provide conclusive evidence that a sexual assault occurred and point to the guilty offender. In the rape scenario evidence that was located and will need to be collected is the semen on the comforter and the tissue located in the trash can. This evidence can contain valuable DNA that points directly to the offender. The semen and the tissue can contain the DNA profile of the offender and the tissue.
The evidence collection process begins first by identifying the evidence in a walk through and then properly documenting the evidence. Documenting the evidence is an essential step in the collection process. This begins with photographing the evidence where it sits in order to show the court where the evidence was located and in what condition. Once the evidence has been photographed it must be collected using uniform collection standards. The comforter that was located contained a semen stain that must be collected in order to develop DNA on the criminal suspect. Most items of evidence will be collected in paper containers such as packets, envelopes, and bags and liquid items can be transported in non-breakable, leak proof containers (Schiro, 2006).
When collecting DNA from the comforter the forensic technician will mark the wet stain with a permanent marker in order to make it easier to locate during the DNA analysis. The technician will then wait for the comforter to air dry before placing it in a clean package and properly sealing and documenting for transportation. The second piece of evidence that was located at the crime scene was a tissue in a waste paper basket. The tissue will need to be collected using a pair of tweezers or using a pair of gloves and then be placed in a plastic container. The plastic container will need to be sealed and then properly documented for transportation.
Documentation does not include j ...
crimescencinvestigationevidencecollection-091001080950-phpapp01.pdf
The document provides information on crime scene investigation and evidence collection. It discusses the goals of recognizing, documenting, and collecting evidence at a crime scene to help solve the case. It describes different types of evidence like physical, biological, class, and individual evidence. It outlines important principles like Locard's exchange principle and explains how to properly secure a crime scene, search for evidence, document the scene through photos, sketches and notes, and collect, package and label evidence. The overall aim is to preserve the crime scene and evidence to aid forensic analysis and investigations.
Special Crime Scenes 1.pptx
- Crime scene investigation involves collecting potential evidence from the location of a crime. Biological evidence like blood, as well as latent prints, digital evidence, trace evidence, and firearms can all be collected.
- The type of evidence collected depends on the type of crime. For a burglary, trace evidence and DNA would be prioritized. Larger agencies have dedicated crime scene specialists, while smaller ones may use first responders or detectives.
- A crime scene is processed following seven steps: establishing boundaries and hazards, securing the scene, planning collection, an initial survey, documenting, a second survey, and preserving evidence. The most probative evidence is sent to forensic labs for examination.
Special types of crime scenes Part-1.pptx
- Crime scene investigation involves collecting and analyzing evidence from the location where a crime occurred. Biological evidence like blood, as well as latent prints, digital evidence, trace evidence and more may be collected.
- The type of evidence collected depends on the crime. For example, a burglary may involve collecting trace evidence and DNA evidence from points of entry and likely contact areas.
- How a crime scene is processed generally follows seven steps: establishing security; documenting the scene; collecting, packaging and preserving evidence. The most probative evidence is sent to forensic laboratories for detailed examination and analysis.
Crime Scene CRJS406-IP5NameClassDate.docx
Crime Scene
CRJS406-IP5
Name
Class
Date
Professor
Crime Scene Investigation
In this scenario police have been alerted about a body that fell out of the sky and landed on a car in front of a suburban home. Police arrived on scene and verified that in fact there was a man with a parachute dead on the top of the witnesses car. Police also locate a leg bag containing about 20 lbs of marijuana and U.S. currency totaling $28,000.00. Once the victim was located the scene is immediately secured by responding police. Police will determine the boundaries of the crime scene and cordon it off with crime scene tape. The crime scene is preserved to ensure no evidence can become damaged or lost. Police will only allow criminal investigators to enter the scene.
Crime Scene Documentation
1. Preserve the crime scene
2. Conduct walk through of crime scene
3. Identify evidence during the walk through
4. Sketch crime scene
5. Photograph or video tape crime scene
6. Photograph each piece of evidence individually with an evidence marker
7. Photograph evidence from every angle
8. Each piece of evidence will be placed in evidence bag or container
9. Collect evidence using uniform procedures
10. Document collection of evidence
11. Label evidence box or envelope
Questions Scene and Body
1. Did anyone witness the man fall from the sky
2. What time did the witness hear glass breaking?
3. What day did the incident occur?
4. Who else heard the glass breaking?
5. What time did the homeowner discover the body?
6. Was anyone near or around the body when located?
7. Did you notice anything unusual before locating the body?
8. Did you notice anything unusual after you located the body?
9. What time did police arrive on scene?
10. What physical evidence was located at the crime scene?
11. How was the evidence
12. How was the crime scene preserved?
13. Who was present at the crime scene when the police arrived?
14. What time of day was body located?
15. What was the temperature outside when the body was located?
16. Was the parachute damage when located on the body?
17. Was there any noticeable tears?
18. What types of impression were located at the scene?
19. Was the homeowner questioned?
20. Who else was questioned at the scene?
21. Were there any other drugs located at the scene?
22. How was the cocaine evidence collected?
23. Was all of the evidence located at the scene?
24. Were the responding police officers interviewed?
25. Did anyone enter the crime scene before the criminal investigators?
Evidence to be Collected at the Scene
· Drug evidence
· Parachute
· Body
· Fingerprints
· Photographs of evidence
· Two Fake id’s
· Trace evidence from body
Collect and Preserve Evidence
When arriving at a preserved crime scene the evidence is collected following standardized methods to ensure any evidence collected can be authenticated for the court case. Any failures to properly document every step of the preservation, documentation, collecti.
Crime Scene Management: Introduction to Crime Scene
This presentation deals with the basics of an introduction to crime scene.
WhatsApp Image 2023-04-05 at 10.10.51 (8 files merged).pptx
A crime scene is the location where a crime was committed and provides important evidence for an investigation. There are two main types of crime scenes - the primary scene, where the crime directly took place, and the secondary scene, which is related to the crime but where the act did not occur. Crime scenes can also be categorized based on their location as indoor, outdoor, or related to a mobile conveyance like a vehicle. Careful collection and documentation of evidence from both primary and secondary crime scenes is important for reconstructing the crime and identifying suspects.
Forensic science intro
Forensic science is the application of science to matters of law. It examines physical evidence found at crime scenes to establish or disprove facts through scientific analysis using principles from fields like physics, chemistry, and biology. Forensic scientists present their expert findings and conclusions in court to aid legal proceedings.
Kyle Morris Forensics
This document discusses how forensic science uses math and science to solve crimes. It explains that forensic scientists gather and analyze evidence from crime scenes using scientific processes like DNA analysis and chemical breakdown. The evidence is then tested and conclusions are formed to determine facts that can be presented in court. Forensic science provides expert opinions that can help determine a person's innocence or guilt.
First-Responders-in-CSI_01.19.ppt
The document discusses crime scene investigation procedures for first responders. It defines key terms related to crime scene investigation such as crime scene, first responder, evidence, and forensic evidence. It outlines the purpose of crime scene investigation as collecting physical evidence to identify suspects and link them to the crime. It also discusses protocols for jurisdictional investigation and maintaining an official police blotter. The document lists standard investigative tools and equipment and methods for recording investigative data like photographs, sketches, written notes, and fingerprint development.
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