IMPORTANCE OF CRIME SCENE: COLLECTION & PRESERVATION OF EVIDENCE - PowerPoint PPT Presentation

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IMPORTANCE OF CRIME SCENE: COLLECTION & PRESERVATION OF EVIDENCE

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The Crime Scene Investigation plays a very crucial role in the criminal investigation process. Every scene of crime is delicate in nature. Therefore, suitable processing is the most primary requisite in the criminal investigation proceedings. The students will be taught the way to process every crime scene differently. – PowerPoint PPT presentation

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Title: IMPORTANCE OF CRIME SCENE: COLLECTION & PRESERVATION OF EVIDENCE


1
CRIME SCENE INVESTIGATION
  • SHERLOCK INSTITUTE OF FORENSIC SCIENCE INDIA
    (SIFS INDIA)

2
Crime Scene Investigation
  • !! WHAT IS
    CRIME !!
  • The word Crime is derived from the Latin root
    Cerno, meaning "I Decide, I Give Judgment.
  • Crime is the breach of Rules or Laws for which
    some Governing Authority (via mechanisms such as
    legal systems) can Ultimately Prescribe a
    Conviction.

3
Crime Scene Investigation
  • !!
    PROSPECTUS !!
  • Module-1 Crime Scene Investigations
  • Module-2 Physical Evidence
  • Module-3 Investigation Techniques
  • Module-4 Glass Evidence
  • Module-5 Soil Evidence
  • Module-6 Paint Evidence
  • Module-7 Tool Marks and Impressions
  • Module-8 Fiber

4
Crime Scene Investigation
  • !! CRIME SCENE
    INVESTIGATION !!
  • Based on the Scientific Method and the Locard
    Exchange Principle, Logic and Forensic
    Techniques Involve
  • Recognition- Scene Survey, Documentation,
    Collection
  • Identification- Comparison Testing
  • Individualization- Evaluation and
    Interpretation
  • Reconstruction- Reporting and Presenting
  • Goals are to determine the following
  • What happened
  • Where did it happen
  • When did it happen
  • Why did it happen
  • Who may have perpetrated these actions
  • How was the incident carried out

5
Crime Scene Investigation
  • !! TYPE OF CRIME
    SCENE !!
  • INDOOR CRIME SCENE Evidence at an indoor scene
    is generally less susceptible to loss,
    contamination and deleterious change. Indoor
    crime scenes are usually easier to secure and
    protect, and securing a scene can be as simple as
    closing a door.
  • OUTDOOR CRIME SCENE The outdoor crime scene is
    the most vulnerable to loss, contamination, and
    deleterious change of physical evidence in a
    relatively short period of time. Individuals with
    access to the scene can potentially alter,
    destroy or contaminate evidence.

6
Crime Scene Investigation
  • !! TYPE OF
    EVIDENCE !!
  • Direct Evidence that (if true) proves an
    alleged fact includes first hand observations
    such as eyewitness accounts. Confessions are
    also considered direct evidence. Also police
    dash videos
  • Circumstantial Evidence is indirect evidence
    that can be used to imply a fact but that does
    not directly prove it but circumstantial
    evidence at a crime scene may provide a link
    between the crime scene and the suspect.
  • Circumstantial evidence can be either physical
    or biological in nature.

7
Crime Scene Investigation
  • !! PHYSICAL EVIDENCE
    !!
  • PHYSICAL EVIDENCE includes impressions such
    as
  • Fingerprints
  • Footprints
  • Shoe Prints
  • Tire Impressions
  • Tool Marks
  • Fibers
  • Weapons
  • Bullets
  • Cartridge Cases.

8
Crime Scene Investigation
  • !! BIOLOGICAL EVIDENCE
    !!
  • BIOLOGICAL EVIDENCE includes
  • Body Fluids
  • Hair
  • Plant Parts
  • Natural Fibers.

9
Crime Scene Investigation
  • !! THE 7th CRIME SCENE
    INVESTIGATION !!
  • Securing the Scene
  • Separating the Witnesses
  • Scanning the Scene
  • Seeing the Scene
  • Sketching the Scene
  • Searching for Evidence
  • Securing Collecting Evidence

10
Crime Scene Investigation
  • !! SECURING COLLECTING
    EVIDENCE !!
  • 1Evidence can be massive to Microscopic.
  • 2 May only be detected in a Crime Lab, ex.
    traces of Blood on Clothing, Hair and
    Fibers from Vacuum Sweeps.
  • 3 It is sometimes necessary to confiscate
    clothing from victim and perp.
  • 4 Critical areas should be vacuumed sweepings
    from different areas must be kept separate.
  • 5 Finger nail scrapings must also be taken from
    suspects and victims.

11
Crime Scene Investigation
  • !! SECURING COLLECTING
    EVIDENCE !!
  • All Evidence Needs to be Properly Packaged,
    Sealed and Labeled.
  • The Evidence log should contain all Pertinent
    Information Including
  • Case No
  • Item Inventory No
  • Description of the Evidence
  • Name of Suspect
  • Name of Victim
  • Date Time of Recovery
  • Signature of Person Recovering the Evidence
  • Signature of any Witnesses Present

12
Thank You
  • ADDRESS
  • 2443, Hudson Lines,
    Follow Us OnKingsway
    Camp, Delhi-110009, India.
  • CALL US
  • 91 11 4707426391 995354654691 9818877002
  • E-MAIL US
  • Email education_at_sifsindia.comSupport info_at_sifsi
    ndia.comWeb www.sifs.in
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