Valhalla and Thornwood Fire Departments were dispatched to a reported house fire. While enroute, MPPD updated incoming units of smoke coming from the structure. First arriving units confirmed smoke coming from the attic. Crews made their way up to the attic trying to locate the fire. While crews continued their investigation a 10-75 was transmitted but quickly cancelled once the source of the smoke was located. Interior crews reported that the small fire was out and smoke was dissipating. Members opened up the top floor to check for any extension. Once overhaul was complete and there were no signs of extension, Westchester County Cause & Origin conducting their investigation. Units were then placed back in service