A three-year-old was struck and killed by a hit-and-run driver early this morning in Morgan County. It happenedon Missouri-135 at Buttons Road. According to the Highway Patrol, Blake Litton of Stover walked from the ditch line into the lane of traffic and was struck by a vehicle which left the scene, heading northbound. The little boy was transported to Bothwell Regional Hospital in Sedalia, where he was pronounced dead on arrival. Troopers did not have a description of the driver or vehicle.