The fire that killed seven people in Lowell last week was an accident.
Investigators said last week’s brownstone fire that killed two Boston firefighters was caused by welders working at the rear of the building next door.
Mayor Martin Walsh paid tribute to the two fallen firefighters by raising the Boston Fire Department flag at City Hall Plaza.
Funeral plans for the two Boston firefighters killed in the line of duty this week will be likely announced Friday, officials said.
Dozens of firefighters gathered inside a terminal at Logan Airport Thursday night to wait for family members of a fallen Boston firefighter to arrive.
Investigators have been unable to determine the cause of a six-alarm fire at a Marlborough condominium complex this week but say there is no indication of arson.
The cause of a fire that killed a Peabody firefighter last month was electrical, the state fire marshal said Wednesday.
Investigators say a multi-alarm fire that destroyed a Colonial-era inn in Groton this summer was likely caused by an electrical malfunction in the attic.