The Criminal Investigations Division is composed of a Lieutenant, Detective Sergeant, Detective Corporal, two Detectives, and an Evidence Technician.  The investigations are supervised by a Detective Sergeant who reports directly to the Lieutenant, who is the Division Commander.  The Divisions Commander reports directly to the Assistant Chief of Police and is responsible for the day-to-day operations of the division. 

The Criminal Investigations Division’s responsibilities include the in-depth investigation of financial, property, person crimes, domestic violence, vice narcotics and special investigations.  The division has a representative who is the police department’s coordinator to the Helena Area Crimestoppers Board and Helena’s Most Wanted program.  They are also responsible for monitoring the pawnshops and what property is being pawned. Weapons sales and related violations are also monitored.  The Criminal Investigations Division also serves as liaison with the County Attorney's Office, FBI, Montana Department of Justice, and other outside agencies.  They also provide specialized training to the department and provide training and education programs to the general public and private sector.