Photo of a two story stucture where the wall has collapsedd

The Fire & Explosive Investigation Section consists of thirty-two Massachusetts State Police officers who make up the Fire Investigation Unit and the State Police Bomb Squad. Each unit has a self-contained command and control structure and a specific jurisdiction to serve. Many of the investigators have been cross-trained to assist the other sections in time of need.

Specially trained Massachusetts State Police detectives have functioned as State Fire Marshal investigators for more than fifty years. The Fire Investigation Unit has 17 members assigned to four regional teams: North, South Central and West. This includes six nationally certified accelerant detection canine teams (handlers and dogs).

By law, the local fire department is responsible for determining the origin and cause of each fire or explosion in its jurisdiction. The State Fire Marshal is mandated to investigate fires and explosions where local fire authorities are unable to determine the cause, where a violation of law exists, or when the fire or explosion is or may be incendiary nature.

The Fire Investigation Unit uses a witness-driven protocol based on the National Fire Protection Association Standard (NFPA) 921: Guide for Fire and Explosion Investigations. Key to the protocol is a team concept of fire investigation where local fire and police, state police and sometimes federal investigators work together. 

accelerant detection canine teams

The State Police Bomb Squad has 12 bomb technicians, including seven nationally certified explosive detection canine teams (dogs and handlers). These teams are deployed regionally across the state. The F&EIS has many specialized resources available to assist municipal fire and police to conduct fire or explosion investigations. The state’s Bomb Squad has always been in the State Fire Marshals’ office, but has grown from two civilians to the 11 specially trained State Police officers today.

The office for the Fire & Explosion Investigation Section is located in the Department of Fire Services, State Road, Stow, MA 01775.

Contact the Fire and Explosion Investigation Section
24-Hour Emergency Activation pdf format of fiu_activation.pdf
: 508-820-2121
Business Hours: 978- 567-3310
Arson Hotline: 1-800-682-9229
Main Fax: 978-567-3119 

MA International Association of Arson Investigators (MA IAAI)

First Responders & Fire Investigators Honored
Photo credit: Nicole Burkhart
Middlesex District Attorney Recognizes Fire Investigation Team
State Police members of the DFS Fire Investigation Unit were among the first responders honored by Middlesex District Attorney Marion Ryan on September 11, 2014. She recognized the police, fire and public safety responders and city officials who served to rescue and protect the people of Lowell during the apartment house fire that killed seven people. Congratulations to Tpr. Bramante, Tpr. O’Donnell, and Sgt. Cunningham who worked with the rest of the investigation team to quickly determine the cause of the fatal Lowell fire. Read the press release pdf format of October 16, 2014 - First Responders & Fire Investigator
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