Firefighters in Boston are working to determine the cause of a 6-alarm blaze in the city's Dorchester neighborhood.
Crews first responded to a vacant triple decker home at 8 Marie St. at 4 a.m. That home was under renovation, according to fire officials.
The fire, which reached 6-alarms, quickly spread to 10 Marie St. and another triple decker on nearby Fox Street.
"All of a sudden my brother just came through the door telling everybody to just get up and get out of the house," said neighbor Bryant Garnett. "The house next door was on fire."
Firefighters were able to douse the flames at each location, but then had to return to the scene a half hour later after hotspots flared up. Three additional apartment buildings were damaged as a result.
Boston Fire Commissioner Joseph Finn said crews did a great job responding.
"It quickly escalated to a 6-alarm fire. We have probably 20 people displaced at this time," Finn said.
No injuries were reported to any residents. One firefighters suffered an ankle injury.
The American Red Cross is assisting those residents who were displaced.
Damage to all the buildings combined is estimated at $3 million.
The exact cause of the fire remains under investigation.