Fire officials reported today that the cause of the six-alarm blaze in a Marlborough apartment building on Monday cannot be determined.
“The very area where investigators believe the fire started, the attic, has been completely burned away,” Marlborough Fire Chief James Fortin said in a statement.
At the same time, he said there was no evidence that the fire was suspicious.
No one was injured in the West Main Street building, Fortin said. That was because the fire alarm system functioned properly and the fire began in the daytime when most of the residents were awake and were able to leave the building quickly.
The American Red Cross said Tuesday that 32 families needed help because of the fire, including 66 adults and 22 children. Six of them will be put up by the city of Marlborough.
The investigation was performed by Marlborough fire and police officials, State Police, and agents from the federal Bureau of Alcohol Tobacco, Firearms and Explosives.