WORCESTER, MASS. (WHDH) - Four firefighters were injured Tuesday morning while battling a blaze in Worcester, an official said.

Emergency crews responding to the scene just after 9:30 a.m. evacuated the Main Street building and rescued a dog inside. Another dog died in the fire, officials said.

Two firefighters suffered leg injuries, one was treated for a shoulder injury and another was treated for heat exhaustion.

Crews focused their efforts on the back, top floor where they believe the fire started.

Two apartments were destroyed and several others sustained smoke and water damage.

The cause of the blaze is under investigation.

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