Around 2215 hours companies were dispatched to across from 5023 Lenker Street for a building fire with possible entrapment. PD on location reporting a working fire in a large building to the rear of Carpet Mart. Command 30 arrived with heavy smoke showing from a 2 story building. Several lines were stretched to the second floor for a stubborn fire in the attic area. Several special calls for manpower were dispatched to the scene. All primary and secondary searches proved negative. Companies remained on the scene for an extended period checking for hot spots and overhaul.