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Forensic Investigations: Solving Crimes with Evidence Analysis

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  1. Forensics Falconer Central School Ellicott Police Department Chautauqua County Sheriff Department

  2. Forensics • Using Forensic Evidence to Solve Crimes • Forensics involves the analysis of clue to reconstruct past events

  3. How Crime Scene Investigation Works • Scene Recognition • Scene Documentation • Finding Evidence • Evidence Collection • Analyzing the Evidence

  4. Scene Recognition • Goal- Gain an understanding of a particular investigation • Develop a systematic approach to finding and collecting evidence • Only using eyes, ears, nose, and paper and pen

  5. Scene Documentation • Create a visual record • Occurs during second walk through of scene • CSI will use cameras, sketchpad, graph paper, pens and pencils, notepads and camcorder

  6. Find the Evidence • Goal is to find, collect and preserve, all physical evidence that will assist in the court process

  7. Types of Evidence • Trace Evidence • gunshot or paint residue, broken glass, drugs • Impressions • Fingerprints, footwear, tool marks • Hair and Fibers • Weapons and Firearms • Question Documents • Diaries, notes, phonebooks

  8. Evidence Collection • The CSI has several main goals • Reconstruct the Crime • Identify the person who did it • Preserve the evidence for analysis • Collect the evidence in a way that will stand up in Court

  9. Analyzing the Evidence • The use of Forensic Labs • Analyze evidence collection • Examples • Fingerprints, footwear and tire impressions • Compare soil samples • Recover computer evidence • Test firearms, compare bullets • DNA • Handwriting Comparisons

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