Update Monday night: SFGate reports the victim was an 82-year-old man. His identification is withheld until family have been notified.
Napa Road was shut down east of the city of Sonoma this afternoon because of a fatal crash, a California Highway Patrol officer said.
The crash was reported at 11:46 a.m. on Napa Road at Burnale Road, near the Napa County line.
Initial reports indicated that the crash involved a gray Volvo SUV and a white Toyota Corolla, CHP Officer Kevin Bartlett said.
One person was pronounced dead at the scene, he said.
The circumstances of the collision remain under investigation.
The road was re-opened to traffic, one lane at a time, by 1 p.m., according to a witness.
Bay City New Service contributed to this report.