MANCHESTER, N.H. (WHDH) - Four firefighters were injured Sunday after battling a two-alarm house fire in Manchester, New Hampshire.

Crews responding to 50 Seventh St. found heavy fire conditions in the rear of the building.

As they attempted to control the flames, heated fuel gasses ignited on the second floor of the home, injuring the four firefighters, according to fire officials.

Three of the firefighters were taken to a local hospital with burns and lacerations. They were released by late afternoon.

No other injuries were reported.

An investigation revealed that a chimney from a pellet stove caused the accidental blaze, according to fire officials.

The flames left behind about $150,000 in damages.

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