Ontario Provincial Police (OPP) say they’re investigating a collision in St. Clair Township on Sunday that killed one motorist and sent three other people to hospital.

Lambton OPP and other emergency services responded to a three-vehicle collision on Courtright Line near Mandaumin Road at approximately 2:15 p.m., according to a news release issued Monday by OPP.

The 19-year-old driver of one of the vehicles was pronounced dead at the scene.

Another driver was transported to a local hospital by emergency services with life-threatening injuries.

A driver and passenger of the other vehicle were both transported to a local hospital with non-life-threatening injuries.

The intersection and surrounding area was closed following the collision, but has since reopened, police said.

Lambton OPP continue to investigate.

They are asking anyone with dash cam footage that might help the investigation or anyone who might have witnessed the collision to contact the OPP at 1-888-310-1122.

Anyone wishing to remain anonymous can call Crime Stoppers at 1-800-222-8477 (TIPS) or leave an anonymous online message.