The primary purpose of the Fire Investigation Division is to determine fire origin and cause, whether accidental or incendiary, in order to lessen injuries and death to civilians and firefighters and to reduce property loss.

The Fire Investigation Division responsibilities include the fire scene investigation and follow up procedures to determine the nature of the incident. If the incident is determined to be arson, the divisions goal is to arrest, prosecute, and convict the involved parties. The investigator will work with firefighter personnel, Baton Rouge City Police, East Baton Rouge Sheriff's Office and any other Public Safety Agency to complete a through investigation.