Firefighters were called to the state prison in Montgomery County, Pennsylvania Tuesday night to douse a blaze set by an inmate, county officials said.
The fire was started in a cell around 6:30 p.m. at the correctional facility along 1 Prison Road in Skippack Township, officials said.
One inmate was hurt in the fire, officials said. A medical helicopter was dispatched to medevac the prisoner.
Officials couldn't say if the injured inmate was the same person who set the fire.
Firefighters quickly knocked down the fire once inside.