Crime Scene Response Guidelines


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One of a series of presentations giving an overview of the crime scene, forensics and tasking. I initally created these as part of a self teach process

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  • This (Crime Scene Response Guidelines) is an EXCELLENT resource for my jr. High Forensics class. Is there any way that I can get the original from you (or download it) so that I can give handouts to my class?

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Crime Scene Response Guidelines

  1. 1. Crime Scene Response Guidelines Personnel Duties and Responsibilities
  2. 2. Personnel Duties and Responsibilities <ul><li>There are certain personnel duties and responsibilities which are necessary in almost any major search operation. Those enumerated in these guidelines concentrate on the ones which are typically crucial to ensure that search efforts are conducted in an organized and methodical fashion. It is important to note it may not be feasible to have one person assigned to each duty. It is relatively common for one person to accomplish two or more duties. </li></ul>
  3. 3. Personnel Duties and Responsibilities <ul><li>For all positions, interest and attitude of personnel are paramount concerns. Training and experience will only be used to best potential when team members possess a positive attitude. This human side of evidence response teams is significant due to the long hours and attention to detail often required of personnel. </li></ul>
  4. 4. Personnel Duties and Responsibilities <ul><li>The major assignments, as well as corresponding general duties and responsibilities, are set forth as follows: </li></ul><ul><li>Team Leader </li></ul><ul><li>Photographer and Photographic Log Recorder </li></ul><ul><li>Sketch Preparer </li></ul><ul><li>Evidence Recorder/Evidence Recovery Personnel </li></ul><ul><li>Specialists </li></ul>
  5. 5. Team Leader <ul><li>Assume control - ensure safety of personnel and security at scene. Ensure personnel use appropriate protective equipment and follow standard recommendations to protect them from any health hazard which might be presented by blood or any other human body fluid. </li></ul>
  6. 6. Team Leader <ul><li>Conduct initial walk-through for purposes of making a preliminary survey, evaluating potential evidence, and preparing a narrative description. </li></ul>
  7. 7. Team Leader <ul><li>Determine search patterns, and make appropriate assignments for team members. </li></ul>
  8. 8. Team Leader <ul><li>Designate command post location and ensure exchange of information between search and investigative personnel </li></ul>
  9. 9. Team Leader <ul><li>Coordinate with other law enforcement agencies and make sure a cooperative spirit is maintained. </li></ul>
  10. 10. Team Leader <ul><li>Ensure that sufficient </li></ul><ul><li>supplies and equipment are available for personnel </li></ul>
  11. 11. Team Leader <ul><li>Control access to the scene and designate an individual to log everyone into the scene. </li></ul>
  12. 12. Team Leader <ul><li>Continuously re-evaluate efficiency of search during entire course of operation </li></ul>
  13. 13. Team Leader <ul><li>Release the scene after a final survey and inventory of the evidence has been done </li></ul>
  14. 14. Photographer and Photographic Log Recorder <ul><li>Photograph entire area before it is entered </li></ul>
  15. 15. Photographer and Photographic Log Recorder <ul><li>Photograph victims, crowd, and vehicles. </li></ul>
  16. 16. Photographer and Photographic Log Recorder <ul><li>Photograph entire scene with overall, medium and close-up coverage, using measurement scale when appropriate. </li></ul>
  17. 17. Photographer and Photographic Log Recorder <ul><li>Photograph major evidence items before they are moved; coordinate this effort with Sketch Preparer, Evidence Recorder, and Evidence Recovery Personnel. </li></ul>
  18. 18. Photographer and Photographic Log Recorder <ul><li>Photograph all latent fingerprints and other impression evidence before lifting and casting are accomplished. </li></ul>
  19. 19. Photographer and Photographic Log Recorder <ul><li>Prepare photographic log and photographic sketch. </li></ul>
  20. 20. Sketch Preparer <ul><li>Diagram immediate area of scene and orient diagram with sketch </li></ul>
  21. 21. Sketch Preparer <ul><li>Set forth major items of evidence on sketch. </li></ul>
  22. 22. Sketch Preparer <ul><li>Designate and label areas to be searched and advise team leader and all other search members of nomenclature for designated areas. </li></ul>
  23. 23. Sketch Preparer <ul><li>Obtain appropriate assistance for taking measurements and double check measurements. </li></ul>
  24. 24. Sketch Preparer <ul><li>Ensure necessary administrative information, such as scale disclaimer (not drawn to scale), is recorded on sketch. </li></ul>
  25. 25. Evidence Recorder/Custodian <ul><li>Have significant evidence photographed before collection. </li></ul>
  26. 26. Evidence Recorder/Custodian <ul><li>Describe evidence and its location on appropriate bag or envelope. </li></ul>
  27. 27. Evidence Recorder/Custodian <ul><li>Sign and date evidence container/maintain chain of custody </li></ul>
  28. 28. Evidence Recorder/Custodian <ul><li>Appropriately collect and package evidence to maximize evidence integrity </li></ul>
  29. 29. Evidence Recorder/Custodian <ul><li>Maintain evidence log. </li></ul>
  30. 30. Evidence Recorder/Custodian <ul><li>Use appropriate protective equipment (gloves) and methods when dealing with potentially infective evidence (blood). </li></ul>
  31. 31. Specialists <ul><li>It is sometimes necessary to bring in expertise from an outside agency. The field of forensic science is so broad today that no agency will have every form of specialty service available from among its ranks. Typically, specialists are brought in from industry, the academic community, private scientific laboratories, and similar concerns. </li></ul>
  32. 32. Specialists <ul><li>When dealing with outside specialists some pertinent aspects to consider are: </li></ul><ul><li>The competence and reliability of the specialist. </li></ul><ul><li>The ability of the specialist to work at a scene within law enforcement guidelines. </li></ul><ul><li>The role of the specialist in presenting expert testimony in court. </li></ul>
  33. 33. Specialists <ul><li>Specialists should be identified before they are needed in an actual case. A current list should be maintained, if possible. The agency should meet with these individuals to determine the best manner to jointly conduct search planning, operations, and follow-up activity. </li></ul>
  34. 34. Specialists <ul><li>The following list provides examples of specialty assistance to be considered (it is not meant to be completely inclusive): </li></ul><ul><li>Anthropologist </li></ul><ul><li>Blood Pattern Analyst </li></ul><ul><li>Bomb Technician </li></ul><ul><li>Crime Specialist </li></ul><ul><li>Engineer </li></ul><ul><li>Entomologist </li></ul><ul><li>Medical Examiner </li></ul><ul><li>Odontologist </li></ul><ul><li>Surveyor </li></ul>Blow Fly Larvae at 3, 4 5 and 6 days hold at a constant temperature of 25 C