Nevada Highway patrolmen are saying a an 18-wheel big rig failed to stop at the intersection of Highway 395 and Jacks Valley Road on Monday afternoon, causing a seven-vehicle accident.

There were six other southbound vehicles stopped or almost stopped for the red traffic signal light at that intersection in Douglas County. Those vehicles included a green Honda Civic two-door, a green Ford Explorer SUV, a gold BMW X5 SUV, a black Chevrolet van, a white International dump truck, and a silver Buick four-door sedan.

Medical conditions and the names of those involved is expected to be released Tuesday.

The driver of the 18-wheeler applied the brakes and slammed into the green Honda and the green Explorer, according to the NHP. The Explorer was forced into the adjacent white dump truck and also struck the black Chevrolet van, while the Honda struck the back of the BMW. The Chevrolet van then struck the rear of the silver Buick four-door sedan.

There were two women and a young man riding in the Ford Explorer. They had to be extricated from their SUV by firefighters. The two women were airlifted by Care Flight helicopter to Renown Medical Center in Reno for injuries believed to be critical, while the young man was transported to a local hospital. The driver of the green Honda was airlifted in a second Care Flight helicopter and also flown to Renown for injuries believed to be serious. The only other claimed injured was from the female passenger riding in the silver Buick.

“Both southbound lanes were blocked because of the sandwiched vehicles and the completion of the on-scene portion of the investigation,” Trooper Chuck Allen said in a statement.