A suspect is still in the hospital, possibly with a broken back, after he allegedly fought with his dad and took the family car off a cliff, deputies said Tuesday.

The suspect, 46-year-old Sean McLellan, was reportedly fighting with his father while driving Monday afternoon, and decided to jerk the car off the road and into a ravine. Sean’s mother, who was reportedly with the family but not in the  car when it plunged over the edge of the ravine.

The younger McLellan reportedly injured his back in the fall, according to Sheriff’s Station officials. He’s still receiving treatment at a local hospital for injuries he sustained in the crash.

A father and son were reportedly arguing while on the freeway near Castaic, where Sheriff’s Station deputies responded to the initial call, for a family disturbance and a medical rescue.

The report indicated the vehicle might have traveled as far 600 feet, according to a Los Angeles County Fire Department official who was not authorized to speak on the record.

Fire Department officials were on scene by 1:09 p.m., near where the car plunged over the side, by the CHP Inspection Station in Castaic.

The son separated from the vehicle shortly after the crash, and deputies searched the surrounding area.

While deputies and Fire Department personnel on scene treated another first-responder for heat stroke, the son surrendered himself to deputies and was then transported for medical treatment.

He’s likely to face an assault charge and kidnapping when he is released from the hospital, according to officials.  Deputies are still investigating reports of a weapon, possibly a knife, that was mentioned in initial reports. No weapon has been recovered.

The incident is still under investigation.