(Coon Rapids, MN)  —  Authorities are investigating a deadly motorcycle crash in Coon Rapids.  The collision happened early this morning in the 34 hundred block of Northwest River Rapids Drive.  The Anoka County Sheriff’s Office says the man on the motorcycle lost control before the crash.  Emergency responders were unsuccessful in saving the victim and pronounced him dead at the scene.  The motorcyclist was not wearing a helmet at the time.