Scientific Crime Scene Investigation

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Presentation transcript:

Scientific Crime Scene Investigation MTMiller

Basic Concepts Discovery process that is methodical & systematic Works for all scenes

An Integrated Sequential Process A scientific crime scene investigation process: First Responders Scene Security Preliminary Scene Survey Documentation Scene Search Evidence Collection Final Scene Survey Reconstruction

First Responders Assist victim Search/detain suspects Witnesses Crime scene security Valuable asset Communication

Crime Scene Security Multi-Level Approach

“Crime Scene Processing” Preliminary scene survey Documentation Scene search Evidence collection, packaging, and collection Final scene survey

Preliminary Scene Survey “Walk-Thru” (with 1st) Evidence present: Transient Conditional Trace Team effort Duties Specialties

Documentation Notes Videography Still Photography Sketching Written Orientation Still Photography Sketching

Searching, Visualization, Enhancement POEs and Paths of Travel Geometric patterns Obvious and less obvious Re-document?

What’s wrong here?

Evidence Collection & Packaging Universal precautions Whole object Wet…let dry! Primary & secondary M. S. I. D. D.

Final Scene Survey Fresh or rested eyes Second set of eyes Scientific-ness

Reconstruction How the criminal act occurred… Using the end result to look to the past. Components: Crime scene and its evidence Forensic laboratory tests Logic/reasoning Experience

Final Thoughts…. Who are the crime scene investigators? Education & Training Certification Forensic science & CSI?