The California Highway Patrol is investigating what appears to be a single-vehicle crash that left one man dead Friday morning south of Pleasanton.
At about 8:15 a.m., CHP officers were called to an area near the intersection of Pleasanton-Sunol Road and Castlewood Drive southwest of Pleasanton in unincorporated Alameda County, just west of Interstate 680, according to CHP spokesman Officer Tyler Hahn.
"Right now it's unknown exactly what happened," Hahn said.
When officers arrived at the scene, they found the vehicle, a 2014 Volkswagen Jetta, on its roof with damage to the front end, suggesting it may have struck one or more trees that line the roadway in that area before it came to a stop about 20 or 30 feet off the road, Hahn said.
A 55-year-old man, who was found behind the wheel, was pronounced dead at the scene by the Alameda County Coroner's Bureau, Hahn said. His identity has not yet been released publicly.
It's not clear when the car left the road or how long it was there before it was spotted by a passing motorist, but officers noted that the engine was cold by the time they arrived, according to Hahn.
"As soon as it became light out and commuters started using that roadway, it was spotted pretty quickly," he said.
"There is no indication about when the collision occurred," Hahn added. "CHP investigators working in conjunction with the coroner are determining if this collision was caused by a medical condition."
The investigation is still underway. Anyone who witnessed the crash or otherwise has information about the incident can contact the Dublin CHP office at 828-0466.