TDOT and the Tennessee Highway Patrol are on the scene of an accident on Interstate 24 eastbound in Marion County.

Around 4:00a.m. Thursday, a tractor trailer carrying a hazardous substance overturned. 

The incident had traffic backed up for at least 3 hours.

Injuries have been reported, but the extent of those injuries isn't known at this time.

TDOT expects to have the road back open by 10:00 CST.