Overview

• Authorities were alerted shortly before 6 p.m. Sunday to 6198 Pope Valley Road, northeast of Calistoga in rural Napa County.
• Investigators say the southbound Toyota Sienna left the roadway for unknown reasons before colliding with a tree.
• Six occupants were pronounced dead at the scene, and two survivors, including the driver, were airlifted with major injuries.
• The male driver was arrested at the hospital on suspicion of DUI causing injury or death, according to the California Highway Patrol.
• Pope Valley Road remains closed as the investigation continues, and officials have not released the identities of those who died.