TOWN OF ASHFORD, Wis. (AP) – The Fond du Lac County Sheriff’s Office says one person was killed and several were injured when a teenager backed a vehicle into a shed.  Three people were taken to St. Agnes Hospital with nonlife-threatening injuries after the crash, which happened just before 8 p.m. Saturday in the Town of Ashford.  A statement from the sheriff’s office Sunday says the 17-year-old driver was backing up in an effort to leave the property when he crashed into the shed, striking several people gathered inside. One of them died at the scene. The driver was not injured and it wasn’t immediately clear if he’ll face charges.        Names of the victims have not been released.