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Fs Ch 2


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Fs Ch 2

  1. 1. Chapter 2 Securing and Searching the Crime Scene
  2. 2. Arrival at the Crime Scene <ul><li>First arriving officer: </li></ul><ul><ul><li>Medical assistance for injured victims </li></ul></ul><ul><ul><li>Detain suspects/witnesses </li></ul></ul><ul><ul><li>Secure the crime scene </li></ul></ul><ul><ul><li>Call for any additional personnel </li></ul></ul>
  3. 3. Securing the Crime Scene <ul><li>Establish appropriate boundaries </li></ul><ul><li>Secured area should include actual crime scene and locations of evidence </li></ul>
  4. 4. <ul><li>Post officers to restrict access </li></ul><ul><li>Crime scene log </li></ul><ul><li>Investigators should never alter the crime scene </li></ul>Securing the Crime Scene
  5. 5. <ul><li>Walkthrough (initial survey) </li></ul><ul><li>Points of entry/exit </li></ul><ul><li>Indirect path to the center of the crime scene </li></ul><ul><li>Evidence located and documented. </li></ul><ul><li>Scene conditions observed and recorded. </li></ul>Surveying the Crime Scene
  6. 6. <ul><li>Primary Crime Scene </li></ul><ul><li>-location of initial crime </li></ul><ul><li>Secondary Crime Scene </li></ul><ul><li>-location after the initial crime occurred </li></ul><ul><li>-inferred by the presence or absence of specific evidence. </li></ul>Surveying the Crime Scene
  7. 7. <ul><ul><li>Staging area outside crime scene. </li></ul></ul><ul><ul><li>Lead investigator assigns tasks. </li></ul></ul><ul><ul><li>Equipment stored. </li></ul></ul><ul><ul><li>Investigators discuss aspects of the crime scene. </li></ul></ul><ul><ul><li>Investigators communicate with personnel at other crime scenes. </li></ul></ul><ul><ul><li>Central area of communication. </li></ul></ul>COMMAND CENTER
  8. 8. <ul><li>Thorough and systematic. </li></ul><ul><li>Search pattern depends on the size/locale and the number of collectors </li></ul><ul><li>Do not overlook pertinent evidence. </li></ul><ul><li>Physical evidence: </li></ul><ul><li>-everything </li></ul><ul><li>-anything </li></ul>CRIME SCENE SEARCH
  9. 9. <ul><li>Line/Strip Search Pattern </li></ul><ul><li>-Start at the boundary of the crime scene and search in straight lines across to the other side. </li></ul><ul><li>-Best for outdoor/large areas/large groups </li></ul><ul><li>Grid Search Pattern </li></ul><ul><li>- search area divided into grids </li></ul><ul><li>-best for large areas/plane crashes </li></ul>Searching the Crime Scene
  10. 10. <ul><li>Spiral Search Pattern </li></ul><ul><li>-Boundary inwards in a circular pattern </li></ul><ul><li>Quadrant/Zone Search Pattern </li></ul><ul><li>-Divided into zones </li></ul><ul><li>-Each zone searched/then zones switched </li></ul><ul><li>-Best for indoors/smaller areas </li></ul>Searching the Crime Scene
  11. 11. <ul><li>Lead investigator: </li></ul><ul><li>-decides when all evidence is recorded/collected </li></ul><ul><li>Final survey: </li></ul><ul><li>-review the scene/collect all evidence and equipment. </li></ul><ul><li>-scene released to the proper authorities </li></ul>Departing the Crime Scene
  12. 12. Crime scene <ul><li>Examine this scene closely: </li></ul><ul><li>-wheelchair </li></ul><ul><li>-signs of forced entry? </li></ul><ul><li>-blood? </li></ul><ul><li>-your initial conclusions? </li></ul>
  13. 13. Securing the crime scene <ul><li>Actual crime scene </li></ul><ul><li>Enthusiasm can be dangerous! </li></ul><ul><li>-note the crime scene tape around the upper floors </li></ul><ul><li>-Rookies! </li></ul>
  14. 14. Crime scene <ul><li>How many people should you let into the crime scene? </li></ul><ul><li>-This look a little crowded </li></ul><ul><li>-No coordination of tasks </li></ul><ul><li>-Milling about approach to crime scene </li></ul>
  15. 15. Caylee Anderson’s crime scene <ul><li>This is an outdoor scene in a wooded location that had flooded since the PR had first called 911. </li></ul><ul><li>-aerial view </li></ul>
  16. 16. Caylee <ul><li>This is an example of a wooded crime scene with soft dirt and large amounts of natural artifacts </li></ul>
  17. 17. Caylee <ul><li>The area where the skeletal remains were found is clearly evident. </li></ul>
  18. 18. You decide <ul><li>Here you have an elderly male in bed covered with blood. The first police officers determined it to be suspicious. </li></ul><ul><li>What do you think? </li></ul><ul><li>What do you see in the picture? </li></ul><ul><li>See the blood? </li></ul><ul><li>See the tissues on the nightstand? </li></ul><ul><li>Never assume!!! </li></ul>
  19. 19. You Decide <ul><li>Another view: Lots of blood. </li></ul><ul><li>-What color is the blood? </li></ul><ul><li>-What can you determine from this color? </li></ul><ul><li>-What does the pooling of the blood tell you? </li></ul>
  20. 20. You Decide <ul><li>This is the bathroom: </li></ul><ul><li>-Note the blood drops on the floor </li></ul><ul><li>-There is blood on the toilet </li></ul><ul><li>-More tissues on the bureau </li></ul><ul><li>Give up? </li></ul>
  21. 21. You Decide <ul><li>This was a natural death. </li></ul><ul><li>There were no open wounds </li></ul><ul><li>The tissues indicated the decedent had tried to control the bleeding </li></ul><ul><li>The color of the blood and the smell in the residence (you can’t smell it of course) were indicators of an upper gastrointestinal (GI) bleed. </li></ul><ul><li>A GI bleed is when someone is bleeding internally and eventually the blood gets thrown up and it can be very messy and appear like a homicide. </li></ul>