DONORA, Pa. (KDKA) — A firefighter was injured battling a two-alarm fire in Donora on Sixth Street.

The call came in just before 5:00 p.m. and took nearly two hours before it was under control.

Five fire companies were required to put out the blaze.

The house is now uninhabitable and was unoccupied at the time of the fire.

Investigators are working to determine the cause of the fire.

The extent of the firefighter’s injuries is unknown.