(Idaho Falls, Idaho) - On Thursday, June 9 at approximately 1:05 p.m., Idaho State Police investigated a single vehicle fatality crash on I-15 near milepost 30, south of the Downey exit, in Bannock County. John S. Park, 76, of Victor, Idaho, was driving a 2009 Toyota RAV southbound on I-15 near milepost 30. Park's vehicle drifted off the right shoulder, came back onto the interstate, and went off the left shoulder. The vehicle continued through the median, crossed the northbound lanes, went off the west shoulder and rolled. The vehicle came to rest upright on its wheels. Park was not wearing a seat belt and was ejected from the vehicle. Park succumbed to his injuries at the scene. Park's passenger, Rosalie M. Park, 83, of Victor, ID, was wearing a seat belt and was transported by ground ambulance to Portneuf Medical Center in Pocatello. The crash is under investigation by the Idaho State Police.