Dallas firefighters arrived at the Richland Trace Condominiums to find heavy smoke coming from the third floor. The fire quickly spread through the ceiling into the attic space. This fire destroyed 36 condominium units. Families that have been displaced by this incident will be assisted by the Red Cross. One injury occurred during this fire. A firefighter was transported to Presbyterian hospital with back spasms. The preliminary cause of this fire is careless use of a plumber's torch.  Fire investigators will continue to investigate this fire to determine where the fire originated.