What is the main role of a Crime Scene investigator?

The main role of a Crime Scene Investigator (CSI) is to secure a crime scene and collect evidence. This responsibility is crucial because the integrity of the crime scene must be maintained to ensure that evidence is not contaminated or destroyed. A CSI is trained to methodically document the scene, including taking photographs, sketching layouts, and recording the position of evidence. They gather various types of evidence, such as fingerprints, DNA samples, and other physical items that can help in the investigation and subsequent legal proceedings.

This foundation of collecting and preserving evidence is vital as it allows forensic scientists and law enforcement personnel to further analyze the evidence and reconstruct the events that occurred at the crime scene. While interrogating suspects, analyzing forensic data, and providing expert testimony in court are all essential aspects of criminal investigations, the primary function of a CSI is to ensure that the initial crime scene is properly handled to support the investigation as it progresses.