Authorities are investigating a deadly motorcycle crash in the Town of Clayton.The Winnebago County Sheriffs Office says deputies responded around 10:43 p.m. Thursday to County Trunk II near Oakwood Avenue for a single-vehicle c rash.Investigators say the motorcycle left the roadway, and first responders found the rider unresponsive.The man was taken by ambulance to ThedaCare Regional Medical Center-Neenah, where he was pronounced dead.County Trunk II remained closed for about three and a half hours while the sheriffs office accident investigation team documented the scene.The victims identity has not been released pending notification of family.The sheriffs office was assisted by the Town of Clayton Fire Department, Gold Cross Ambulance and the Village of Fox Crossing Police Department. ...read more read less