The Fire Investigator handles all investigations of suspicious and arson fires within the city of Thomson. The Fire Investigator responds to instances of:

• Fire believed to be intentionally set
• Fires involving juveniles
• Fires involving fatality
• Fires involving high dollar loss
• Acts of terrorism (i.e. fire bombing, structural sabotage)
• Hazardous Condition of an occupancy representing an immediate threat to life safety (i.e. assembly overcrowding, blocked exits, building collapse, compromised fire protection and detection systems, etc)
• Other related hazards and/or fires requested by the on-scene incident commander

The primary responsibilities of the Fire Investigator are to determine the origin and cause of a fire scene as set forth by the National Fire Protection Association.