A man from Dallas County died Wednesday, during a single-vehicle accident in Polk County. The Iowa State Patrol says according to witnesses, for reasons unknown, a 2015 Volvo SUV driven by 64-year old John J. Lint, of Dallas Center, veered off Interstate 80 westbound at around 3:50-p.m., and entered the north ditch, where it struck a tree before coming to rest. The accident happened on the north side of Des Moines, about a mile west of the Highway 69 exit to Ankeny. Lint was pronounced dead at the scene. The accident remains under investigation.