Around 1600 hours, Limerick Fire Department and Royersford Fire Department were dispatched for a residential fire, with reports of smoke in a bedroom. Assistant Chief 51 arrived on location and established command. Engine 98 and Ladder 51 arrived on location and crews put a line in service and went to the second floor to investigate. Engine 51 arrived and established water supply for Engine 98. Interior crews reported smoke in the attic with no visible fire and continued investigating. Ladder 51 set up to access the roof, while a crew from Engine 51 laddered the exterior of the dwelling. Crews continued to investigate until a source was found. The incident is under investigation by the Limerick Township Fire Marshal's office.