Two explosions ripped through a three-story home Wednesday, injuring 17 people and igniting a fire that destroyed the house.
The explosions apparently were caused by natural gas, according to Boston Gas spokeswoman Kathleen Hearn. She said officials do not know where the gas came from and that the company was searching for a leak.
Many of the injured, including nine children and two firefighters, were hospitalized, with one in "extremely critical" condition, said Richard Serino of Boston Emergency Medical Services.
The house in the Dorchester neighborhood on the south side of Boston burned for about 10 minutes before it collapsed into a pile of burning debris.