LOUISVILLE, Ky. (WHAS11) – A firefighter was injured while fighting a blaze in the 1600 block of Thornberry Ave. on Sept. 20. He was transported to the hospital with serious, but not life-threatening, injuries.

Firefighters wouldn't say where he was burned, but witnesses who saw him on the stretcher say it looked like he hand serious burns on his hand.

As for the cause of the fire, it's still unclear what caused it. Firefighters believe the fire started at the back of the home, and there is pretty significant damage to the house.

Firefighters also say it looks like someone tried to fight the fire themselves. A hose was found running behind the home.

Witnesses were getting choked up as they watched the firefighter brought out on a stretcher. One woman told WHAS11 she could see the significant burns on his hand.

“When I seen him and seen him shaking on the stretcher, really I can't even describe it, it made me just feel really sick just to see someone like that. You know, you don't want to see nobody like that, nobody, but especially people coming out here trying to risk their lives to save people,” Denise Watson said.

“Firefighting is a dangerous profession, and when inside a dwelling like that, temperatures can be upwards of 4 or 500 degrees, and even ceiling temperatures of 1000, so while you're in there, while you're wearing protective equipment, sometimes it's the heat. We have situations where firefighters are burned,” LFD Chief Frederick said.

The firefighter was identified as Romaine R. Knight, a 10 month veteran who graduated from the Louisville Fire Academy this past April. He suffered third-degree burns on his hand. He is in stable condition at University of Louisville's burn unit, where he will remain for the next 7 to 10 days.

The chief said he is unsure if or when the injured man may return to fighting fires.

No one else was injured in the fire.