A motorcyclist is in serious condition after he was struck by a car, thrown into the road and run over by another vehicle Thursday in Cobb County.

The second vehicle that struck him as he lay in the road left the scene and police are looking for it.

The collision was reported around 9:31 p.m. June 13 on Bells Ferry Road at Shallowford Road in Kennesaw. According to Cobb police, a disabled 1999 Harley Davidson XL1200 motorcycle was stopped in the left northbound lane on Bells Ferry Road when a silver Toyota Sienna crashed into the back of the motorcycle.

The motorcyclist, identified as Dylan J. Threewitt, 25, of Canton, was knocked off the Harley and run over by a second vehicle that was also traveling northbound. Cobb police said that second vehicle, which was identified by witnesses as a small, dark-colored SUV, stopped briefly, but left the scene.

Threewitt was taken to WellStar Kennestone Hospital with critical injuries. His passenger on the Harley, Kayli McGaha, 25, of Marietta, suffered non-life-threatening injuries in the accident. She was also taken to Kennestone hospital. Rye Pak, 58, of Acworth, the driver of the Toyota, was not injured.

Cobb police spokesman Neil Penirelli said it’s unclear at this time where the passenger on the Harley was at the time of the second collision.

McGaha, who talked to Channel 2 Action News by phone from the hospital, said she may be discharged Friday. However, she said Threewitt remains hospitalized at Kennestone’s Intensive Care Unit and she has not seen him since the night of the crash.

Anyone who has information about the second vehicle involved in the collision is asked to call Cobb County police at 770-499-3987.

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