At approximately 0330hrs. The Nottingham Township Fire District, Valley Inn, Finleyville, and North Strabane, was alerted for a structure fire with possible entrapment. Update given by dispatch was working fire, negative entrapment. Engine 26 arrived with Chief 26 taking "Barr Road Command." Water supply established quickly by Engine 26 and an aggressive interior attack was initiated. Engine 46 arrived and went to work on ventilation. Upon arrival of Engine and Truck 48 additional crews put to work with attack lines. Fire was stubborn getting in between the ceiling and roof which made it difficult to contain. Shortly before 0500 fire brought under control. Crews remained on scene for overhaul until 0630hrs. Assisting were Pennsylvania State Police and Peters Township EMS. Elrama and Library fire companies were on stand by for Finleyville. Pennsylvania State Police Fire Marshall is investigating.