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Published byJoshua Harrison Modified over 9 years ago
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Organizational stage to plan search: › Conducted by team leader › Initial cautious walk through of the scene › Identify extent of the search area - may require expanding initial perimeter › Consider methods and procedures needed to process scene Crime Scene Admin and Management 1
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Determine additional manpower, equipment, and specialist needs Identify and protect transient evidence Make extensive notes to document physical and environmental conditions Crime Scene Admin and Management 2
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Evaluation begins upon arrival at the scene Becomes more detailed in preliminary survey stage Concentrate on the most transient evidence first and work toward least transient Ensure you have appropriate packaging material for evidence to be collected Crime Scene Admin and Management 3
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Narrative is a running general description of the condition of the crime scene Present an overall general to specific description of crime scene Note items that catch your attention Methods of narrative can be: › Audio › Written › Video Crime Scene Admin and Management 4
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Record what eyes/brain forget Detail recorded quickly/accurately Best way to demonstrate scene to a jury Shows location of evidence 5 Crime Scene Admin and Management
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Begin immediately Use Photo Log for documentation Photograph all evidence prior to collection 6 Crime Scene Admin and Management
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Photograph the scene completely to include: › Points of entry/exit › Overall, medium, close-up › Surrounding area/neighborhood › Victims, crowds, vehicles Photographs supplement sketches and notes Cannot take too many photos Crime Scene Admin and Management 7
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Overall › Show the location of the scene › Street signs, etc. Medium › Place the evidence into a location within the scene › Show the relation to the surrounding area Close-up › Close view of each item of evidence (fill the frame) › Take with and without a scale NEVER REMOVE EVIDENCE UNTIL IT HAS BEEN PHOTOGRAPHED Crime Scene Admin and Management 9
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10 Photographed in its original location or area
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Show general layout or floor plan Help jury understand the scene Depict exact location of evidence Supplement photographs Item numbers on sketch must coordinate with the item numbers on the evidence log Crime Scene Admin and Management 14
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Provides measurements of scene/location of evidence Enables construction of a “to scale” diagram Always retain original sketch Enables reconstruction of the crime scene and places each item of evidence in original location Crime Scene Admin and Management 15
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Base search method on evaluation of scene Conduct search from general to specific › Cautious then vigorous › Obvious then hidden › Remember to collect known samples Use specialized search patterns when necessary › Strip, grid, spiral, quadrant, small search teams Crime Scene Admin and Management 17
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Search entrances and exits Wear proper protective equipment to avoid contamination or damaging the evidence Slow and methodic – DO NOT RUSH Crime Scene Admin and Management 18
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Photograph and mark evidence on the sketch Complete evidence log Have one person as evidence custodian, if possible Seal the evidence packaging at the scene Crime Scene Admin and Management 19
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Check all logs and evidence for accuracy Have at least two people: › Observe evidence in place before collection › Observe evidence being collected › Mark evidence directly or › Mark evidence containers for identification Crime Scene Admin and Management 20
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Four basic premises to consider: › The best search options are usually the most difficult and time-consuming › You cannot over-document the physical evidence collected › Start your search out CAUTIOUSLY and finish VIGOROUSLY Crime Scene Admin and Management 21
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Personal safety must always be a consideration Consider chemical and biological hazards Booby traps Terrorists, drug dealers Crime Scene Admin and Management 23
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Crime Scene Admin and Management 24 Ensure all personnel has personal protective equipment Treat all blood and body fluids as infectious View crime scene as source of contamination
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Never place hands where you cannot see Do not eat, drink, or smoke at crime scenes Use face masks and eye protection when dealing with body fluids Never recap hypodermic needles Crime Scene Admin and Management 25
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Anywhere you go you leave something behind and take something away with you Good for evidence collection › Find evidence of the subject or victim Bad for contamination › Contaminate the crime scene › Residue, hair and fiber, footprints etc. Crime Scene Admin and Management 26
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Wear clean clothing Double glove and change gloves often DO NOT go from one crime scene to another in the same clothing Use shoe covers and remove when you leave the scene Crime Scene Admin and Management 27
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Explosive residue contamination › Do not wear same clothes worn at another post blast scene or residue search › Separate evidence from multiple scenes › Do not wear firearm while collecting residue samples Crime Scene Admin and Management 28
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Paper › Use for biological materials › Can destroy latent prints Plastic › Can cause biological materials to deteriorate Heat Seal Bags › Works well for most evidence › No need to use evidence tape Cartons › Large items Biohazard Material › Clearly mark biohazard Bomb/Arson Evidence › Paint cans, glass jars Crime Scene Admin and Management 30
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Directly mark evidence when possible › Initials and date › Be careful not to destroy latent prints, DNA Mark packaging with administrative info › Case number - Date › Item number - Description of evidence › Location evidence was found › Name/initials of 2 officers who recovered evidence Seal evidence on site › Sign across evidence tape Crime Scene Admin and Management 32
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Contains same information as evidence packaging › Description of evidence › Where it was found › Who found it (two names) › Evidence item number Information on packaging must match that on evidence log Crime Scene Admin and Management 34
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1st signature is person who collected evidence Each person thereafter signs if taking evidence into custody regardless time held Must be diligently maintained Remains with the evidence Easiest way for the defense to suppress evidence NO EVIDENCE – NO CASE!! Crime Scene Admin and Management 35
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Crime Scene Admin and Management 37 Critical review of all aspects of the search Discuss search jointly with all personnel for completeness Double check documentation to detect inadvertent errors or omissions
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Take exit photographs › Photograph search warrant and FD-597 in place Ensure › all evidence is accounted for before departing and the scene is secure › you have all your equipment prior to departing › that nothing has been overlooked Crime Scene Admin and Management 38
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Before leaving the scene, make sure you collected everything you could to help solve the case Ensure you have utilized all appropriate resources and specialists You only have one chance to do it right! Crime Scene Admin and Management 39
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Release only after final survey is complete Complete the administrative worksheet › Time/date of release › To/by whom scene was released Release the scene only when all personnel are satisfied that the scene was searched correctly and completely Team leader releases the scene Crime Scene Admin and Management 40
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