CHICKASHA, Okla. (AP) - Authorities say four people, including three teenagers, were killed in a head-on collision on U.S. 81 in Grady County.
The Oklahoma Highway Patrol says the four died following an accident about noon on Saturday.
Troopers say 17-year-old Heather Doughty was driving south on the highway when her car traveled left of the center line and struck a northbound SUV driven by 69-year-old Delbert Tolle.
Tolle; Doughty; 15-year-old Sara Lane and 14-year-old Kalynn Pena all died of massive injuries.
Joseph Tolle, who was riding in Delbert Tolle's SUV, was flown by medical helicopter to an Oklahoma City hospital, where he's listed in serious condition.
The patrol says the teens were wearing seat belts.