The Investigations Division is under the command of the Investigative Services. The Investigations Division includes Investigators, Task Force Officers, Evidence Laboratory and a Crime Analyst. Members of the Detective Bureau are highly trained in conducting in depth investigations and presenting those investigations to the Prosecuting Attorney's office for charges.
Members of the Detective Bureau also participate in the Major Case Squad of Greater St. Louis, which was formed in 1965 and is a multi-departmental unit charged with investigating major crimes in six Missouri and four Illinois counties. The squad brings together specially trained, and highly experienced investigators and averages an 80% clearance rate.