An early Tuesday morning fire displaced 9 residents of 17 Bond St in Somerville. One resident reported a Somerville Police officer saved lives by knocking down their door and pulling people out of the home. 

As firefighters arrived heavy fire was showing which was extending into the building, a second  alarm was sounded. Firefighters worked extensively to keep it from spreading to neighboring houses. A third alarm was sounded to bring in extra personal to overhaul and rotate to hydrate because of the high tempertures. One firefighter was taken to the hospital and treated for dehydration. 

Cars and a second house were also damaged by the heat of the fire.

State and local authorities  are investigating the cause.