SULLIVAN COUNTY, Tenn. -

An arson investigation is underway in Sullivan County, Tennessee after two fires.

The first fire happened on Light Hollow Road on March 14th, just before 4:30 p.m. Authorities tell us it started in an outbuilding and spread to a vacant home.

A second fire happened on the 16th on East Campground Road. We're told a barn caught fire just after midnight. Nobody was inside, but there were two vehicles and three a-t-vs inside.

If you have any information on these fires, call the Sullivan County Sheriff's Office at 423-279-7500.