NORTH HAVEN, Conn. (WTNH) — Connecticut State Police are investigating a car crash on I-91 Southbound in North Haven Saturday night that closed down all lanes.

The crash occurred between Exits 10 and 9, involving five cars and a tractor trailer, police said.

Officials said the tractor trailer was reported to be carrying produce and the Department of Consumer Protection has been requested to respond to the scene.

I-91 Southbound is shut down for the investigation. The North Haven Fire Department reports there are six patients in total.

Police are asking drivers to avoid the area and use alternate routes.