A four-alarm fire that severely damaged the historic Quincy Masonic Temple has been ruled an accident.
A spokeswoman for the state Department of Fire Services say investigators determined that Monday's fire was started when workers grinding and cutting some ductwork in a tight spot accidentally ignited some nearby insulation. No one was hurt in the fire.
The temple was built in the 1920s and did not have a sprinkler system.
A structural engineer will determine whether the building needs to be demolished.
The building, assessed for $3 million, was in the process of being sold.
Lodge members said the fire destroyed irreplaceable relics, photographs and documents.
This program aired on October 2, 2013. The audio for this program is not available.