One person died during a rollover accident early this (Monday) morning, in Dallas County. The Iowa State Patrol reports a 2005 Pontiac Grand Prix was traveling north on Highway 141 near mile marker 140, at around 5:35-a.m., when the driver fell asleep at the wheel. The car left the road and entered a ditch before rolling twice, ejecting the driver. The victim, whose name was not released pending notification of family, was not wearing a seat belt.