The Criminal Investigations Division Detectives investigate criminal offenses that occur within Haltom City and ensure the proper collection and preservation of evidence related to these crimes. The unit includes ten Detectives and one civilian Administrative Secretary who are supervised by 2 Sergeants and 2 Corporals. One Corporal supervises the Street Crimes Unit, and the second Corporal is assigned general investigations. The unit secretary also serves as the Department's Victim Assistance Coordinator.

The second Sergeant and one Detective are assigned to the county-wide Metro Narcotics Intelligence and Coordination Unit, and one Haltom City Detective is assigned to the Tarrant County Auto Theft Task Force.