Officials in Massachusetts say there are up to 70 fires burning in Lawrence, Andover and North Andover after problems with the natural gas system.
Multiple people have been hurt, including one firefighter in Andover. Town officials said two civilians in Andover were also injured.
In Lawrence, at least four people were said to be undergoing treatment at Lawrence General Hospital, according to WHDH. A woman trapped in her house during the explosion suffered leg injuries, and a man in a car nearby was seriously injured by a falling chimney.