AUTHORITIES ARE INVESTIGATING THE CAUSE OF A FIRE AT A HOME IN SULLIVAN COUNTY. FIREFIGHTERS RESPONDED TO A DWELLING ON PLEASANT GROVE ROAD IN BLUFF CITY WEDNESDAY. THE GARAGE OF THE HOME WAS FULLY ENGULFED WHEN FIRE CREWS ARRIVED. THE OWNER AND HIS TWO SONS WERE ABLE TO ESCAPE WITHOUT INJURY. THE HEAT FROM THE FIRE CAUSED DAMAGE TO A NEARBY HOME. THE CAUSE OF THE BLAZE IS CURRENTLY UNKONWN.