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(NECN: Chelsea, Mass.) - Firefighters are battling a blaze in Chelsea, Mass.
The fire is burning at a triple-decker at 142 Congress Avenue. The building is divided into six units.
Firefighters in Chelsea are getting the assistance of fire teams from Revere and Everett.
Fire crews were still actively fighting the fire as of 2:15 p.m. Wednesday.
One firefighter was taken to Mass General with unknown injuries.
It is unknown right now if cold weather has affected any crews fighting the fire. There were no hydrant issues as of 2:15 p.m.
It is too early to tell how much damage there is or where the fire originated.