This story has been updated to reflect that it is a two-family home; that it has been ordered demolished; and a total of three firefighters were treated for injuries.

PITTSFIELD -- Four people have been left homeless by a two-alarm fire that destroyed their duplex at 150 Wahconah St., fire officials said on Wednesday.

The fire, which was reported about 9 p.m. Tuesday, displaced all the occupants of the two-family home, according to Pittsfield Deputy Fire Chief Mark Cancilla.

The city's five engine companies and two ladder trucks fought the blaze in frigid temperatures. Off-duty city firefighters also were called in, along with mutual aid from Lenox.

Flames emanated from an upstairs room in a two-story home and spread to the roof before being controlled and mostly extinguished around 10 p.m. Water directed at the center of the roof froze by the time it reached the eaves, as temperatures hovered around 14 degrees.

Officials said one firefighter suffered a hand injury at the scene and was taken to Berkshire Medical Center, where he was treated and released. Two other firefighters were treated at the scene for minor injuries.

The home suffered extensive fire damage and was ordered demolished by the city's buildings department.

Investigators with the state fire marshal's office were trying to determine the exact cause of the fire.

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