The primary responsibility of the Criminal Investigation Bureau (CIB) is to conduct follow-up investigations of major crimes referred by the Patrol Bureau or directly reported by citizens or businesses. Detectives conduct investigations that lead well outside of the geographic boundaries of the city. Detectives receive specialized training in investigative techniques relating to specific types of crime, such as financial crimes, vehicle theft, and youth crimes.

The CIB is commanded by the Detective Sergeant who oversees day to day operations, assigns detectives to cases and directly supervises major case investigations. The Detective Sergeant reports to the Assistant Chief of Police.

Youth Services Unit

The Youth Services Unit includes the School Resource Officers assigned to the Greenfield and Whitnall School Districts. The unit primary responsibility for follow-up investigation of crime reports involving youthful offenders, in a manner essentially similar to the Detectives assigned to the CIB. Child abuse, child sexual abuse, and children in need of protective services are cases handled specifically by the Youth Services Unit.