HOUSTON (AP) Two Houston firefighters have been hurt battling a house blaze in which a brick wall collapsed.

The Houston Fire Department on Thursday said one firefighter who was injured when the wall fell is hospitalized in stable condition.

The second firefighter was transported to a hospital after receiving an electrical shock during Wednesday night's blaze. That firefighter is described as alert and conscious.

Officials are trying to determine what sparked the fire that heavily damaged a two-story house. Nobody else was injured.