A one-vehicle rollover accident north of Mandan killed a man. Andrew Lee Dakken, 27, was driving northbound on Highway 1806 at about 3:20 a.m. Saturday when he went off the road at a left-hand curve, according to a report from the North Dakota Highway Patrol. The Mandan man's truck entered a ditch on the east side of the road, vaulted, landed on the front end and rolled. Dakken, who was not wearing a seat belt, was ejected from the truck and pronounced dead at the scene. The highway patrol is investigating the crash.