Division of Criminal Investigation

SackLt. Colonel Steve Sack, Commanding Officer

Division of Criminal Investigation
(314) (314) 615-5400


The Division of Criminal Investigation serves as the formal investigative branch of our Department and is divided into six separate Bureaus - Crimes Against Persons, Crimes Against Property, Drug Enforcement, Criminal Identification, Fugitive Affairs, and Administration.  In this role, the Division initiates proactive criminal investigations and preforms follow-up investigations on a wide variety of crime types until all suspects involved have been apprehended or until all leads are exhausted. 


The Division of Criminal Investigation is located on the second floor of the police headquarters at 7900 Forsyth Blvd., Clayton, MO 63105.




Bureau of Crimes Against Persons

 The unit investigates crimes related to homicides, assaults, robberies, sexual assault and family and child abuse. 

Homicide/Assault Unit: Detectives assigned to this unit respond to and investigate homicides, suicides, suspicious deaths, fatal automobile accidents, and serious assaults.

Robbery Unit: Robbery detectives respond to and investigate robberies of establishments and complete follow up investigations on reports of street robberies. In addition, these detectives teach robbery prevention seminars to business and neighborhood groups.

Sexual Assault Unit: Detectives investigate reports of rapes, and sexual assault where the victim is an adult. They assist the victims in receiving support through the court and community services.

Family Crime Unit: Detectives assigned to the Family Crime Unit provide interdiction and work to reduce domestic violence and child abuse. These detectives also investigate missing person cases.

Bureau of Crimes Against Property

These detectives are responsible for investigating crimes where a property loss or damage has occurred. Investigators arrest criminals, retrieve stolen property for larceny victims and investigate suspicious fire and explosive-related incidents. 

Burglary Unit: Detectives assigned to the Burglary Unit work out of the precinct stations and investigate burglaries occurring within the precinct boundaries.

General Assignment Unit: Detectives investigate felony thefts, credit card frauds, computer crimes, and bad checks. In addition, detectives teach fraud and theft prevention seminars to business and neighborhood groups.

Auto Theft Unit: Auto theft detectives investigate vehicle thefts, re-tagging operations and track recovered stolen vehicles. Detectives also conduct inspections at tow yards and automobile dealers to ensure compliance with state and local regulations.

Arson & Explosives Unit: The Arson and Explosives Unit is manned with detectives trained by the FBI and the National Fire Academy, who render safe explosive devices and work with local fire districts to combat arson. In addition, the unit employs a K-9 who is trained to identify accelerants used in arson.

Bureau of Drug Enforcement

The St. Louis County Police Department’s Bureau of Drug Enforcement has evolved into one of the largest locally controlled multi-jurisdictional drug task forces in the Midwest. The Bureau consists of several specialized units that include the Street Enforcement Team, the Interdiction Unit, two Long Term Investigations Units, and detectives specializing in the investigation and removal of methamphetamine laboratories. The Bureau of Drug Enforcement has commissioned and civilian personnel assigned full-time to the Federal Drug Enforcement Administration (DEA), the Federal Bureau of Investigation (FBI) and Immigration and Customs Enforcement (ICE). Additionally, all members of the drug task force work closely with other federal agencies, including the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). 

Bureau of Criminal Identification

Detectives assigned to the Bureau of Criminal Identification support the other detectives with expert services. The units include Crime Scene, Property Control, Finger Printing, Prisoner Conveyance and  the Crime Laboratory. 

Crime Laboratory

The St. Louis County Crime Laboratory has been a forensic service provider to the citizens of St. Louis County for nearly fifty years. The laboratory currently services the St. Louis County Police Department, nearly ninety municipal police agencies within St. Louis County, as well as several federal agencies. The laboratory is tasked with providing scientific analyses of physical evidence for these agencies while also offering training of a scientific nature to officers in the law enforcement community. Forensic scientists at the lab use specialized skills to identify, evaluate, and objectively describe evidence from crime scenes, generate reports of these findings, and testify to the results for the judicial system.