A : 2006 Harley Davidson motorcycle was southbound on Highway 8 near mile marker 96 in Dunn County, about 13 miles north of Richardton. For an unknown reason the motorcycle applied hard braking and veered to the right. Motorcycle ran off the roadway into the west ditch. The driver, John Schaff, was ejected off the motorcycle when the motorcycle began overturning. Driver was transported by ambulance to CHI hospital in Dickinson for serious injuries. Crash remains under investigation.