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OSAGE COUNTY -- A Tulsa motorcyclist was killed when a 73-year-old driver failed to yield at a stop sign on State Highway 20 at County Road 2535 about 10 miles west of Skiatook in Osage County, according to the Oklahoma Highway Patrol.

Two other people were in critical condition after the crash.

An Oklahoma Highway Patrol trooper reports that 45-year-old Frances Carter of Tulsa was pronounced dead at St. John Hospital in Tulsa of head and internal injuries just before 6:30 p.m. Saturday. His passenger, 34-year-old Carla Cagle, was taken to St. Francis Hospital where she was admitted in critical condition with head, trunk, arm and leg injuries.

OHP reports Bartlesville resident Charles Stillian, 73, was driving southbound on County Road 2535 at 5:01 p.m. when he failed to yield from a stop sign, entering the intersection at State Highway 20. He struck Carter's 2005 Harley Davidson, which was traveling eastbound on the highway.

Stillian, who was not injured in the wreck, had three passengers in his Chevrolet pickup. One passenger, 48-year-old Suzanne Stillian of Bartlesville, was admitted to St. John Hospital in Tulsa in critical condition with head and internal injuries. The other two were not hurt.

The trooper's report states that all the people in Stillian's car were using seat belts, but that airbags did not deploy. The driver and passenger on the motorcycle were not wearing helmets.

The report lists Charles Stillian's condition as apparently normal and the cause of the collision as failure to yield from a stop sign.