A 17-year-old Park City girl who died Friday afternoon in a rollover near Jeremy Ranch has been identified as Erica Knell.

Knell drifted into an adjacent eastbound lane on I-80, then overcorrected and rolled into the median, said Utah Highway Patrol trooper Cameron Roden.

The teen was not wearing a seat belt, he said.

Knell was flown to University Hospital, where she later died.

Roden said speed may have contributed to the accident, and an investigation is under way.