0959 hours. Ronkonkoma FD responds to 116 Patchogue Holbrook Road for a reported house on fire. Crews arrive to find an active fire in he basement of a dwelling. One line was stretched and operated. Mutual aid was provided by Farmingville FD for a ladder, Holtsville FD for a ladder, Holbrook for an engine, Nesconset FD for an engine, Lakeland FD for an engine.  Centereach FD sent an ambulance to cover.  Town of Brookhaven Fire Marshals are handling the investigation.