 Speed is believed to be a possible contributor to the cause of the crash. Driver impairment is not believed to be a factor at this time. No names are being released as this crash is still under investigation. The condition of the injured occupants is unknown at this time. The Minnesota State Patrol responded to a single vehicle rollover in Detroit Lakes at around 7 o'clock Thursday morning. Officials say the vehicle was traveling west on Highway 10 when it went off the roadway and rolled into the ditch, coming to rest on its roof.