Every incident, be it a crime, accident, natural disaster, armed conflict, or other, leaves traces at the scene. The goal of the subsequent investigation is to correctly interpret the facts, reconstruct the events and understand what happened. Due to the transient and fragile nature of those traces, their reliability and the preservation of their physical integrity depend to a very large extent on initial actions at the scene of the incident. Evidence integrity can be achieved with very limited means by observing a key set of guiding principles. Acting with care throughout the crime scene investigation process is critical for the admissibility of evidence for court purposes as well as for human rights inquiries and humanitarian action.
Crime Scene Investigation Department
The duties of Crime Scene Investigation Unit of PFSA are to ensure proper identification, preservation, collection, transportation of evidence from the crime scene to the lab and to establish the chain of custody in order to maintain the integrity of the evidence.
A crime scene is a location where an illegal act took place, and comprises the area from where most of the physical evidence is retrieved by trained law enforcement personnel, crime scene investigators.
Evidence is very important in criminal cases. Therefore, only trained professionals should do the collection and preservation of evidence. These professionals are called crime scene investigators. The biggest hurdle in their way to successful investigation is crime scene contamination.
Processing the crime scene
- Audio Recording
- Video Recording
Collection of Evidence
- Physical evidence
- Biological Evidence
- Trace Evidence
- Impression Evidence
- Packaging and sealing of evidence
- Maintaining Chain of Custody forms
Death Scene Investigation
- Aiding in the determination of the Cause, Manner and Mechanism of Death
- Photographing and Documenting the body
- Aiding in the Estimation of the time of death
Reconstructing the Scene
- Blood Spatter Analysis
- Projectile Trajectory Determination
- Creating a replica of the crime scene in Lab to test hypotheses
- Determining the number of people involved
- Determining the sequence of events
- Serial Number Restoration
- Crash Determination