Interstate 40 is closed in both directions after a truck pulling a portable trailer caught fire on Sunday morning. 

According to the Tennessee Highway Patrol, the incident happened near the exit to Highway 48 in Hickman County around 11 a.m. 

It is unclear if anyone was injured in the fire. 

The road will be closed in both directions until at least 3 p.m.

This is a developing story. Stay with News 2 on-air and online for updates.