(Campbellsport) A Campbellsport man was injured in a motorcycle accident Saturday in Fond du Lac County. Authorities were dispatched to County Highway F near Floral Park Lane in the Township of Osceola just after 3:30pm. An eastbound motorcycle, driven by 66-year-old Mark Maaske, lost control after negotiating a curve, hit gravel shoulder and rolled several times. Maaske was ejected from the motorcycle and was not wearing a helmet. He was transported to Froedtert Medical Center by Flight for Life with serious injuries. Alcohol was not a factor in the crash which remains under investigation.