DEXTER, Iowa (AP) – The Dallas County Sheriff’s Office is looking into what caused the death of a man found bleeding from head wounds on a gravel road. Gregg Nimmo was found face down on the road on August 28th by a passer-by at the Beaver Lake Campground, near Dexter. The mother of the 44-year-old Nimmo said that her son’s head had beenseverely fractured and nearly crushed. While it was initially thought that Nimmo had fallen from a moving vehicle, his mother, Carolyn Livengood, says he had no abrasions on his body, which he would have had if he had fallen onto the road. Dallas County Sheriff Chad Leonard says it’s too early in the investigation to determine whether Nimmo’s death was an accident or foul play.