A Rohnert Park man died tragically in an off-road accident on April 18 that also resulted in his 1-year-old son being taken to a Southern California hospital where he was listed in critical condition.

Steven Brent Williams, 30, of Rohnert Park, was driving a modified Jeep rock crawler while the family was visiting the Johnson Valley Off-Highway Vehicle Area.

According to a California Highway Patrol report, Williams lost control of the Jeep and it overturned three times. All four riding in the Jeep were ejected from the vehicle.

Williams, the report said, had his 4-year-old daughter, Saleen Marie Williams, in his lap, while his wife, Naomi Williams, had 1-year-old Steven Terrell Williams in her lap.

The CHP said even though there were five-point harnesses in the Jeep, no one was wearing seatbelts. There are no laws mandating riders or drivers to wear seatbelts when driving off-road.

When contacted Wednesday morning, a Loma Linda University Medical Center spokesman had no further details on the condition of the 1-year-old.

According to the report, the Williams family was camping at Johnson Valley. At the time of the accident, they were driving eastbound on Means Dry Lake Bed at an undetermined speed. Steven Brent Williams died at the scene because of major head and internal injuries.

His family was airlifted to Loma Linda University Medical Center, where Naomi and Saleen were treated for their injuries and released.