Firefighters burned while battling fire

MOBILE, Ala. (WALA) - Three firefighters were injured while fighting a fire at a duplex in Mobile.

It happened just before 7:30 p.m. on Bush Avenue off Old Shell Road.

According to a spokesperson for Mobile Fire Rescue, the flames broke out at apartments A and B.

The firefighters were burned when the fire "flashed" as they were trying to exit the building.

One firefighter went to the hospital with second degree burns on his thumb. Another firefighter has blistering on his arm and ears while a third was burned on his neck.

None of the injuries were life-threatening.

Residents of the duplex were able to make it out safely.

Fire crews have the fire under control, and are working to put out hot spots.

Right now, investigators do not know what caused the fire.

We'll bring you the latest information on this developing story as we get it.