VIDEOS: Three firefighters were injured, one seriously, after a natural gas explosion led to a fire Monday at a commercial building on Amherst Street in Nashua.
Officials said none of the injuries were considered to be life-threatening.
One firefighter was released from the hospital, while the other two remained hospitalized overnight.
The fire happened at the Greater Nashua Mental Health building at 440 Amherst St.
About 40 people were working inside when a ruptured natural gas line was reported around 2:15 p.m., according to fire officials.
Nashua Fire Chief Steve Buxton said workers evacuated after smelling gas and hearing a hissing sound.
Investigators believe no one was inside when the building caught fire. Fire Marshal Sean Toomey said there was no active fire when crews arrived to investigate the reported gas leak.
Some firefighters became trapped for a short time after a small explosion, but were able to get out.
WMUR-TV ABC 9 Manchester
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