BOSTON (CBS) — A firefighter was hurt battling a three-alarm Dorchester triple-decker fire on Saturday night.

Firefighters were called to the blaze at a Montello Street home around 8 p.m., according to the Boston Fire Department Twitter account.

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All of the building’s rear porches became engulfed in flames, fire officials say. The fire was put out about an hour later.

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The injured firefighter was taken to a local hospital after suffering a back injury. No civilians were hurt.

An estimated $500,000 worth of damage was done to the building, according to the fire chief.

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The origin and cause of the fire remains under investigation. No additional information was readily available.