KYTC expects the interstate to be blocked for three hours. Photo provided | ODOT

All southbound lanes on Interstate 71 have reopened after a crash involving a semi-truck catching fire, the Kentucky Transportation Cabinet said.

On I-75, the ramps to go to I-71 southbound have also reopened.

The lanes were closed near Verona-Mudlick road, south of the 72-mile marker, for over four hours.

It is unclear if anyone was injured in the crash.

KTYC has not said what led up to the crash.

This is a developing story. Check this story for updates.

This story originally appeared at WCPO.com.

WCPO is ABC's Cincinnati affiliate and a content-sharing partner of LINK nky.