MILLERVILLE (WJON News) -- An ATV driver has been seriously hurt in a rollover. The Douglas County Sheriff's Office says the incident happened just before 9:30 p.m. Thursday near Millerville. North Ambulance, Millerville First Responders, Millerville Fire Department, and Life Link Helicopter responded along with the Sheriff's Office. County Road 7 north of Millerville was temporarily shut down. The Sheriff's Office says alcohol is believed to be a contributing factor.