Authorities say an autopsy will be performed to determine why a southwestern Iowa man died after an accident in Pottawattamie County. Sixty-year old Garry Johnk, of Atlantic, was traveling westbound on Highway 83 near Avoca at around 7:30 a.m. Tuesday.

As his truck passed by an Iowa Department of Transportation road crew, it nearly hit them before veering off the road and coming to rest in a harvested corn field. The crew noticed Johnk was slumped over and leaning toward the driver’s side door just before the accident occurred.

Despite efforts by the crew to resuscitate Johnk, he later died at the hospital in Harlan. The man’s truck sustained very little damage. The accident remains under investigation.

(Reporting by Ric Hanson, KJAN, Atlantic)