A six-alarm fire raged through two wooden buildings in East Boston Wednesday morning while damaging a third, displacing at least 20 people and causing an estimated $1.2 million in damage.
The fire began around 8 a.m. and involved buildings on Sumner and Webster streets.
No residents were injured, though a firefighter was transported to the hospital with a leg injury, the Boston Fire Department said in a tweet.
Boston Fire spokesman Steve MacDonald says East Boston can be a dangerous area to fight fires.
"The houses are so close together that any fire that gets a headway, there's great cause for spread of fire," MacDonald said. "We are very fortunate that wind was not a factor today."
Investigators say an electrical issue in an apartment building at 309 Sumner Street likely sparked the blaze.
WBUR's Delores Handy contributed to this report.
This article was originally published on July 30, 2014.