CHE 1.22 - CHE 1.22.08 The Crime Scene I Processing the...

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The Crime Scene I. Processing the Crime Scene a. Secure and Isolate the Scene i. Emergency medical assistance ii. Preserve and protect evidence 1. Exclude unauthorized personnel 2. Lay boundaries 3. Designate officer in charge 4. Document site b. Team Leader: Determines search pattern and continuously evaluates and updates decisions regarding the retrieval of evidence. c. Photographer: Records scene, evidence, and the body from multiple angles and ranges; often one of the first on the scene. d. Sketch Preparer: Depicts the scene with accurate dimensions and key items of evidence. e. Evidence Recorder: Records what, when, and by whom evidence is found as well as all other comings and goings at the crime scene. In charge of chain of custody form. f. The search must be thorough, systematic, unbiased, and relevant. i. Collect from victim: Clothing, hair, blood, fingernail scrapings, residue, swab, etc. ii. Each kind of evidence should be packaged and handled differently to best preserve it. iii. The coroner has ownership of the body and is the only one who can take evidence from it. iv. Buccal Swab: Inner-cheek swab used for DNA profiling. v. Substrate Control: Uncontaminated surface material close to the location of physical evidence. II. Legal Considerations at the Crime Scene a. Evidence collection is based on the restrictions of the 4 th Amendment which protects against unreasonable search and seizure. b. Circumstances for a Warrantless Search i. Emergency situation ii. Threat of immediate destruction of evidence iii. Search the area within immediate control of the person iv. With consent of both parties c. Mincey v. Arizona i. Drug bust gone wrong and officer was shot. Police spent four day hunting for evidence. The court said the evidence was inadmissible because four days was an unreasonable amount of time. 1. Evidence taken without proper authority is probably not legally admissible in court. d.
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CHE 1.22 - CHE 1.22.08 The Crime Scene I Processing the...

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