How should evidence be collected at a crime scene to maintain integrity?

• A. Secure the scene, minimize contamination, document locations, collect and package items properly, and maintain chain of custody
• B. Photograph everything before collecting items
• C. Move items around to test relevance
• D. Ignore chain of custody and trust memory

Answer: (D)

Preserving evidence integrity starts with securing the scene and controlling who can access it. By limiting access, you reduce the risk of contamination, tampering, or loss of context. Documenting exactly where each item is found preserves the scene’s original arrangement, which is crucial for understanding relationships between items and for later reconstruction of events.

Collecting and packaging items properly protects them from damage and from cross-contamination. Using appropriate containers and labeling helps maintain the item’s condition and makes it traceable through the investigative process. Maintaining a clear chain of custody records who handled each piece of evidence, when, and for what purpose. This continuity is essential for admissibility in court because it demonstrates that the evidence has been kept intact and unaltered from collection to presentation.

Photographs are valuable, but they don’t replace the need for careful collection and documentation. Moving items around or altering the scene can destroy context and physical links between pieces of evidence. Ignoring chain of custody would undermine credibility and could render evidence unusable.

So, the best approach is to secure the scene, minimize contamination, document locations, collect and package items properly, and maintain chain of custody.