UPDATE: 401 EB Open in Chatham-Kent

OPP in Chatham-Kent have cleared three separate incidents on the 401.

Between 11am and 3pm Monday, officers responded to what was being described as "serious motor vehicle investigations" in the eastbound lanes of Highway 401.

As of 12:05am Tuesday, the OPP reported that the eastbound lanes were reopened between Orford Rd. and Kent Bridge Rd.

A tractor trailer fire and two separate personal injury collisions necessitated a full shut down of the eastbound lanes causing significant motor vehicle backups in the area.