UPDATE: The Tennessee Bureau of Investigation is assisting the Marion County Sheriff's Office with a death investigation after a body was found on a side road off of Highway 156 at Moore's Crossing near the railroad tracks.

According to the Marion County Sheriff's Office, a train conductor saw the body Friday morning, and deputies were called to the scene around 8:30 am CST.

A TBI spokesperson said the body has been taken to Nashville for an autopsy. 

The sheriff's office believes foul play is a factor. 

Channel 3 will continue to follow this story and bring any new updates.