PORTLAND, Maine — An accident involving a tractor trailer truck and at least two other vehicles shut down a section of the Maine Turnpike Thursday morning.

The Maine Turnpike Authority closed the southbound lanes near Exit 47 shortly before 5 a.m.

Some drivers were stuck in stand-still traffic for upwards of an hour during the morning commute.

Tow truck operators cleared the scene and police were able to reopen the highway by 7 a.m.

It is unclear if anyone was injured.