Officers report there was a third person involved in the collision not associated with the two who fled the scene.
Additional information from officers state the motorcyclist brandished a knife and also fled westbound on his Harley-Davidson.
Officers on scene state a dark silver Jeep Grand Cherokee fled the westbound on Westborough Blvd.
EMS report the collision was between a motorcycle and a car.
Police and EMS are responding to a report of a car collision with injuries.
Incident reported at Westborough Blvd & Galway Dr.