Fire about 5:30 a.m. Sunday damaged a barn on Doc Hawkins Road, sheriff's Deputy Aaron Rogers said in a report.
Owner John Carter, of Horton Highway, told deputies he was driving home and saw the barn "in a blaze" from the corner of Doc Hawkins and Old Baileyton Road.
Carter called 911, the report said.
The Baileyton and Newmansville volunteer fire departments responded to the scene, along with Greene County-Greeneville Emergency Medical Services.
The extent of the damage was not included in the report.