A motorcyclist is dead after he or she was rear-ended by another vehicle on US 285 Monday night.

Colorado State Patrol says the driver involved ran away from the scene in the area of C-470 and US 285, but was later found at a nearby gas station. He was taken to the hospital, but his injuries are not known.

The motorcyclist, who was not been identified, was headed north on 285 just after 11 p.m. when investigators say a Mazda Protege hit their bike from behind.

CSP says the motorcyclist hit the center barrier and landed in the southbound lanes of the busy highway. That person was pronounced dead on the scene.

The ensuing investigation prompted US 285 to be closed for hours. The road was cleared just before 5 a.m.

CSP hasn't said what charges the man driving the Protege could face.