One person was injured in a motorcycle crash north of Knoxville this afternoon. At approximately 1:05 P.M., the Marion County Sheriff’s Office received a report of a single vehicle accident in the 1200 block of Highway 14. Marion County Sheriff’s deputies, along with the Knoxville Police Department, Knoxville City Rescue and Knoxville Township Fire Department, responded to the scene. When they arrived, they found a 19-year-old male from Milton, Iowa, unconscious. Initial investigation shows that the individual was riding with a group of other motorcycles when he lost control of his motorcycle. No other vehicles were involved in the accident. After receiving initial emergency care on scene, the male was transferred by helicopter to a hospital in Des Moines. The accident remains under investigation.