Authorities on Monday released the names of three women killed in a head-on crash in Napa, a case in which a man was suspected of driving under the influence of drugs. 

The women were identified as Vivian Bertolino, 65; Linda Wolters, 62; and Katrina Clarke, 65, according to the Napa County Sheriff’s Office, which includes the coroner’s bureau. Bertolino and Wolters lived in American Canyon in Napa County. Clarke lived in Sacramento.

The crash occurred just before noon Saturday on Silverado Trail near Stag’s Leap Wine Cellars. The California Highway Patrol said the driver of a southbound Mitsubishi sedan sideswiped a northbound sport utility vehicle, then crashed into a Toyota sedan behind the SUV. 

Bertolino and Wolters were riding in the Mitsubishi as passengers. Clarke was a passenger in the Toyota. 

The Toyota driver and two other passengers in the car were also taken to a hospital for treatment. The SUV driver and a passenger complained of pain only, Renspurger said. 

The Mitsubishi driver, William Dene Brumley, was arrested on suspicion of gross vehicular manslaughter while intoxicated and driving under the influence of drugs and causing injury, according to Napa County jail records. The 58-year-old Vallejo resident was taken to a hospital for treatment and was expected to survive, Renspurger said. 

The CHP did not release further details Monday. 

Silverado Trail, a two-lane road that winds through vineyards in the area, was closed until about 6 p.m. Saturday.