SAN JOSE -- A man who was killed in a fiery rollover Jeep crash on a rural dirt road June 27 has been identified as John Golden, 51, of San Jose.

The California Highway Patrol said Wednesday that the cause of the crash -- cited as an unspecified mechanical problem -- remains under investigation.

Golden was the only person in the Jeep CJ-5 wearing a seat belt, and the other three occupants escaped with minor injuries when they were thrown from the vehicle.

The rollover accident happened on a private road on Richmond Ranch, northwest of San Felipe and Metcalf roads in the hills south of San Jose. The Jeep caught fire and started a six-acre vegetation blaze.

CHP officials stressed that despite the unusual circumstances of this crash, motorists should always wear a seat belt.

"Every collision has a different set of circumstances," said CHP Officer Chris Falkowski last week. "Still, always wearing your seat belt is the safest way to travel in a vehicle wherever you are, whether on a mountainous road or a five-lane freeway."

Contact Eric Kurhi at 408-920-5852. Follow him at Twitter.com/erickurhi.