C.I.D. is responsible for all major crime scene processing, photography, and forensic evidence gathering and handling.

C.I.D. has trained Investigators in the fields of crime scene investigation, interview and interrogation, crime scene photography, evidence handling/seizure, and child sexual abuse investigations.

During large scale criminal investigations, C.I.D. often works in collaboration with other area local, state, and federal law enforcement agencies in order to pool resources and more effectively solve crimes.

The Criminal Investigation Division is the clearinghouse for all investigative reports generated by the department. Each case is reviewed for solvability factors and is then assigned to an investigator for follow-up based on the type of crime and the investigator's expertise. Members of the division conduct interviews and lawful searches during an investigation to gather information or evidence useful in reconstructing the occurrence or circumstances of an illegal act.

The primary duties of an investigator include: the apprehension of offenders, recovery of stolen property, preparation of cases for court prosecutions, out of state extraditions, and the presentation of evidence in high level court cases.