The Kenton County police are investigating a single-vehicle motorcycle collision that left one dead on I-75 southbound.At around 4:45 p.m. Fort Mitchell police to a single-vehicle motorcycle collision on I-75 southbound around mile market 187.2.Police found the lone operator and sole rider of the motorcycle deceased at the scene and say excessive speed is likely a factor in the collision.Police have not released the identity of the 20-year-old male victim.Anyone with information about the incident is encouraged to call the Fort Mitchell Police Department at 859-331-2823.