Crime scene management
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This document discusses the importance of crime scene investigation, including the collection and preservation of evidence. It emphasizes that physical evidence found at a crime scene can provide crucial details about the how, what, why of a crime and help identify victims and offenders. It outlines best practices for processing a crime scene such as isolating and securing the area, documenting the scene thoroughly, searching methodically for evidence, collecting and packaging evidence maintaining a proper chain of custody, and submitting evidence to a crime lab. The document stresses that following proper protocols in investigating and documenting a crime scene is essential for obtaining factual evidence that can be used to determine the truth and administer justice.
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Crime scene management
- 1. IMPORTANCE OF CRIME SCENE: COLLECTION & PRESERVATION OF EVIDENCE Presented By: Abdul Hafeez Bhutta Hammad Ahmed Qureshi Group Members: Zubair Ahmad Syed Ameer Abbas MB.Din Ikram Haider Rizwan Yousaf Syed Amir Abbas Sahiwal Hassan Mahmood Asghar Hayat
- 2. EVIDENCE / JUSTICE O you who believe! stand out firmly for justice, as witnesses to Allah, even as against yourselves, or your parents, or your kin, and whether it be (against) rich or poor: for Allah can best protect both. Follow not the lusts (of your hearts), lest you swerve, and if you distort (justice) or decline to do justice, verily Allah is well-acquainted with all that you do. (Surah Nisa – Verse 135)
- 3. Forensic Science "Wherever he steps, wherever he touches, whatever he leaves, even without consciousness, will serve as a silent witness against him his fingerprints or his footprints, but his hair, the fibers from his clothes, the glass he breaks, the tool mark he leaves, the paint he scratches, the blood or semen he deposits or collects. All of these and more, bear mute witness against him. This is evidence that does not forget. It is not confused by the excitement of the moment. It is not absent because human witnesses are. It is factual evidence. Physical evidence cannot be wrong, it cannot perjure itself, it cannot be wholly absent. Only human failure to find it, study and understand it, can diminish its value.“ Dr. Edmond Locard (13 December 1877 – 4 May 1966)
- 4. “Every contact leaves its trace.”
- 5. Crime Scene Any physical location in which a crime has occurred or is suspected of having occurred. PRIMARY CRIME SCENE: The original location of a crime or accident. SECONDARY CRIME SCENE: An alternate location where additional evidence may be found.
- 6. The ABC of Investigation • Assume nothing • Believe no one • Check everything
- 7. Why Crime Scene Is Important?? • The Identity of the Victim… • The How, What and Why… • Mental Culpability… • Who is (are) the Offender(s)… • Evidence…
- 8. Processing a crime scene • Isolate and secure the scene • Document the scene • Search for evidence • Collect and package evidence, maintaining the chain of custody • Submit evidence to the crime lab
- 9. Search Strategy, Basic Principles A crime scene search is planned, coordinated, and executed by law enforcement officials to locate physical evidence. Crime scenes involving suspected or confirmed weapons of mass destruction (WMD) (nuclear and/or radiological, biological, chemical, or explosive agents) should be handle only by qualified personnel.
- 10. The First Steps • The first officer to arrive at the scene is responsible for securing the crime scene. • First priority should be given to obtaining medical assistance for individuals in need of it and to arresting the perpetrator. • As soon as it is possible, extensive efforts must be made to exclude all unauthorized personnel from the scene. • Once the scene is secured, the preliminary exam must begin. • Recording of the crime scene becomes a critical piece to the investigation process.
- 11. Recording Methods • Photography • Sketches • Notes • Videography
- 12. Search Strategy, Preparation Personnel • Briefing of involved personnel personnel assignment types and handling of evidence • Manpower • Supply (food, water, medical assistance … ) Equipment • Packaging material • Protective clothing for personnel Documentation • Paperwork (a. o. handover from shift to shift) • Photograph, videotaping
- 13. Search Strategy, Staff Personnel/ Responsibilities: Team Leader Photographer Sketch Preparer Evidence Recorder Evidence Recovery Personnel Specialists …
- 14. Search (Patterns) Use a search pattern (grid, parallel or spiral). Search for evidence from the general to the specific. Be alert for all evidence. Search entrances and exits.
- 15. Collecting and packaging evidence • One individual should be designated as the evidence collector to ensure that the evidence is • collected, packaged, marked, sealed, and preserved i n a consistent manner • Each item must be placed in a separate container, se aled, and labeled • Most fragile is collected and packaged first • Different types of evidence require specific or special collection and packaging techniques
- 18. Packaging and Preserving Evidence
- 19. Right or Wrong?
- 20. Right or Wrong?
- 21. Right or Wrong?
- 22. Right or Wrong?
- 23. Right or Wrong?
- 24. Thank You
- 25. Any Questions??