3rd District Attorney General Dan Armstrong has asked the Tennessee Bureau of Investigation to look into a possible homicide in Greene County.
Someone called 911 on Thursday morning to report that a man was shot at a home on Cumberland Drive in Tusculum.
When officers arrived, they found the body of 64-year-old David Lineberry.
Deputies say they don't have a suspect at this time.
The TBI is leading the investigation.
Investigators sent Lineberry's body to Johnson City for an autopsy.