SAN DIEGO (KGTV) - A riderless motorcycle caused several vehicles to crash on state Route 94 in the Webster area.

The incident happened on westbound SR-94 near Kelton Road shortly before 10:45 p.m. Wednesday, according to the California Highway Patrol.

CHP officials said a male motorcyclist traveling on the highway struck a car and somehow got off the motorcycle.

However, the motorcycle continued to speed down the freeway for about half a mile, hitting at least two other cars before coming to a stop on the road.

The downed motorcycle was struck by several vehicles, and authorities said some of the vehicles ended up crashing as a result.

One car rolled over and came to rest on its roof, authorities said. The car's driver suffered minor injuries and was taken to the hospital.

Meanwhile, CHP officers searched for the motorcycle rider, but the rider was not located.

A witness said he believed he saw a man with a helmet walking away from the initial crash scene, but CHP officials are continuing to investigate.

If found, the motorcyclist could face felony hit-and-run charges.

No other injuries were immediately reported.