PERRY, Kan. (AP) — Four people were killed when two vehicles collided head-on in eastern Kansas.

The crash occurred Sunday afternoon on U.S. Highway 24 near Perry.

Casey Quigley, fire chief of Perry and Kentucky Township in Jefferson County, said the four people killed were in a pickup and SUV that collided head-on. He says two other people were injured.

He says one of the vehicles was on fire when emergency responders arrived.

Quigley says the cause of the crash is under investigation.