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

Knell drifted into an adjacent eastbound lane on Interstate 80, then over-corrected 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 into the cause is under way.