DALLAS COUNTY (CBSDFW.COM) – Dallas Fire Rescue crews responded to a 2-alarm fire at a vacant commercial building Wednesday night.

It happened around 11:00 p.m. on Composite Drive in the northwest part of the city.

READ MORE: Investigators Trying To Identify Armed Man Who Robbed Bank In Mesquite

Firefighters arrived to find smoke coming from the one-story building. The fire quickly spread and sent flames shooting from the roof.

READ MORE: At Least 1,900 U.S. Military Guns Were Lost Or Stolen During The Last Decade

(credit: Tim Lavow/CBS 11 News)

Dozens of firefighters worked to put out the flames. One of those first-responders sustained a non life-threatening burn and was taken to a local hospital to be checked out. He is expected to be okay.

No one else at the site was injured.

MORE NEWS: Southwest Airlines Jets Flying Again After Being Grounded Due To 'System-Wide Error'

Investigators are still working to find the cause of the fire.