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VISTA, Calif. — A young woman was killed by a wrong-way driver in Vista, authorities said Monday.

Around 10:20 p.m. Sunday, a 36-year-old Carlsbad man was driving east in the westbound lanes of state Route 78, east of Sycamore Avenue, when his pickup truck collided head-on with a sedan being driven by a 24-year-old Vista woman, according to California Highway Patrol.

Both vehicles were so severely damaged that crews had to remove both drivers from their vehicles, said Battalion Chief Dave Pender of San Marcos Fire Department.

Both drivers were taken to Palomar Medical Center to be treated for severe injuries. The woman was pronounced dead at the hospital.

Officers suspect alcohol was a factor in the collision. Their investigation is ongoing.

CHP investigated a second crash on 78 in San Marcos Monday. A man died when his SUV veered off the freeway and flipped in front of a business, officers said.