Homicide Investigation Collecting Evidence

3052 words 13 pages
Nothing is more crucial to any investigation than the actions of the first officers on the scene and the actions they take regarding the preservation of the crime scene, detention of witnesses and an arrest if possible. The immediate objective of the first officers on the scene must be the safety of all parties involved and all else follows
Crime scene preservation should be the most important step to any first responder. This protocol should continue to be followed by anyone who processes the scene. From the moment the first responder arrives at the scene, he/she should exercise a pertinacious attitude to insure that curious onlookers and personnel who are not involved in a task related to the scene, remain outside the cordoned
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The photographs should be taken as soon as possible, to depict the scene as it is observed before anything is handled, moved, or initiated into the scene. The photographs allow a visual permanent record of the crime scene and items of evidence collected from the crime scene. There are three positions or views that the crime scene investigator needs to achieve with the photographs. Those views consist of overall scene photographs showing the most view possible of the scene, mid-range photographs showing the relationships of items and a close up of the item of evidence.
A close up should be taken of items that have serial numbers, tags and VIN’s. All stationary evidence where the photograph will be used to assist in the analytical process should be taken using a tripod with the proper lighting techniques for creating any needed shadows. A second photograph adding a measuring devise should be taken of items where the photo will assist in the analytical process.
Sketches are used along with the reports and photographs to document the scene. A crime scene sketch is simply a drawing that accurately shows the appearance of a crime scene. The sketch is simply drawn to show items, the position and relationship of items. It does not have to be an architectural drawing made to a scale, however it must include exact measurements where needed. The advantage of a sketch is that it can cover a large area and be

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