At least six people were injured after a tractor-trailer overturned in a crash, causing a gridlock on the New Jersey Turnpike during rush hour in Mount Laurel, Friday night.

The crash involved a tractor-trailer and multiple cars in the southbound lanes near Route 73, according to police.

Chopper 3 was live over the scene, which shows the truck overturned on its side and police blocking off traffic.

The crash closed all southbound lanes of the highway for a while during rush hour, but lanes have since reopened.

New Jersey State Police explain how Turnpike crash occurred

The crash happened just before 4 p.m. near mile marker 35.5, New Jersey State Police said in a news release.

A Peterbilt tractor-trailer heading south had to change lanes and get onto the shoulder to avoid htiting cars in traffic, NJSP said. During that lane change, the truck driver lost control and hit a Toyota SUV, causing the truck to move forward and jack-knife. 

As the truck turned sideways, it hit nine more passenger vehicles.

A total of six people were taken to a nearby hospital with minor injuries after the crash, according to NJSP.