Williamson N.Y. - State Police are investigating a fatal crash involving a person on a motorcycle.

The person was killed following a three-vehicle crash on Route 104 in Williamson around 1pm Friday afternoon. Police says cars were slowing down near the intersection of Townline Road as a vehicle waited to make a turn there.

Police say the driver of pickup truck did not slow down in time and struck the motorcyclist , sending that person into the westbound lane where they were  hit and killed.