Greene County Sheriff Steve Burns said Donald Ray Gunter, 69, was found dead at his Old Mountain Road residence just before noon Tuesday.
The Tennessee Bureau of Investigation and the Greene County Sheriff’s Department's Criminal Investigation Division were conducting the investigation.
Investigators asked for the public's assistance in locating Amanda Kate Harris, 27, and Mario Donte "Rio" Keene, 39, who may have information related to the case.
Harris was decried as 5 feet, 3 inches tall, 120 pounds with blond or brown hair and blue eyes. Keene was described as black, 5 feet, 2 inches tall and 210 pounds.
Burns also listed a vehicle involved — a 1998 gold Cadillac Catera with Tennessee registration 894-RCW.
Anyone with information pertaining to this investigation or Harris and Keene was asked to contact the Greene County Sheriff’s Department at 423-798-1800.