The Criminal Investigation Unit is a team of Crime Scene Investigations which is made up of civilians and officers. The unit is divided into Crime Scene Technicians and Evidence Custodians.

The CSI (Crime Scene Investigation) Unit entails processing a crime scene in the field to preserve it for future prosecutions. CSI investigators locate, evaluate and collect latent and patent fingerprints and photograph injuries of victims and suspects. They also process major crime scenes such as homicides and assaults. This involves collecting and packaging items of evidence for processing by the ID Technicians. It also involves photographing and videotaping the scene and the items of evidence. Our CSI Technicians are sworn officers who must meticulously detail evidence in order to support the case reports and assist detectives in solving crimes.