The fire Thursday afternoon at 109 Fuller St.

Boston Fire Department Twitter

Two separate house fires in Dorcester on successive days this week have displaced nearly 30 people, fire officials said. Two firefighters received minor injuries, one from each fire. Investigators are trying to determine a cause for each blaze, and no residents were injured.

 

In the latest incident, the Boston Fire Department responded to a three-story home on Friday, before 8 a.m., at 7 Rowell St. The two-alarm blaze began in the basement, and had reached the first floor, officials said.

 

Thirteen people were displaced and one firefighter was taken to Boston Medical Center with a minor injury, the department reported. There was an estimated $100,000 in damage.

 

About three miles south, firefighters on Thursday afternoon responded to a two-alarm fire at the top floor of a three-story building at 109 Fuller St.

 

Five adults and 10 children were displaced from the three apartments in that multi-family home.

Chief Joseph Finn estimated that the damage from Thursday's 3 p.m. fire was around$500,000.A firefighter was treated and transported by EMS for injuries that were not life threatening.