BOSTON (WHDH) - Firefighters knocked down a five-alarm blaze that spread to three buildings in Dorchester Sunday afternoon.

Firefighters responding to reports of a blaze at 439 Quincy St. at 3:45 p.m. found heavy fire on the rear porches, which spread to adjacent buildings on either side of the three-family.

The fire was knocked down about 45 minutes later, according to fire officials.

Thirty people were displaced by the fire, which caused $400,000 in damages, fire officials said. Two firefighters suffered minor injuries but no one in the buildings was hurt.

“We have a good physical fitness program, most of the guys here have been exposed to that,” said Deputy Fire Chief Gerard Fontana. “It’s helped out a lot on a day like today.”

The cause of the fire remains under investigation, but friends of the residents displaced said they were thankful no one was hurt.

“I’m just happy my friends are OK,” said Joao Depina. “Materialistic stuff can be replaced, but a life can’t be replaced.”

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