Authorities in Lafayette County say a motorcyclist was seriously injured in a crash in Lafayette County Sunday. 29 year old Francis Carlborg of Hazel Green, was taken by ambulance to MercyOne Dubuque Medical Center before being airlifted to University of Iowa Health Care Medical Center for treatment of a head injury. According to the Lafayette County Sheriff’s Department, Carlborg was operating a motorcycle east on Phillip Lane in Benton Township just before 6 p.m. Sunday when he lost control of the motorcycle and it entered a ditch. Carlborg was not wearing a helmet and was thrown from the motorcycle.