Investigators are trying to figure out what caused the cargo on a semi-tractor trailer to catch fire on the Ohio Turnpike in Jackson Township.

The fire broke out in the trailer at around 1 a.m. Tuesday along the westbound lanes of the Turnpike near the Mahoning Avenue interchange.

The driving lane of the turnpike was closed for a couple hours while state troopers investigated.

No one was injured and the road is now fully open.