A medical condition is believed to be the cause of a rollover accident on I-94 near Tower City.

The Highway Patrol says it was around 1 o'clock Sunday afternoon when 43-year-old Amy Hartze of Casselton swerved off the road into a ditch, hit a concrete partition and rolled.

Hartze was pinned inside her vehicle and had to be cut out.

She was taken to Essentia with non-life threatening injuries.

There is no word on the type of medical issue she suffered before the crash.