Oceano resident Victor Manuel Garcia Trejo, 22, died Thursday after the car he was riding in crashed near Lake Cachuma.
At 11:20 p.m., 23-year-old Francisco Javier Vega was driving a Honda sedan eastbound on Highway 154 near Seven Oaks Ranch when he missed a left curve, according to the CHP. The car ran off the roadway and hit a guardrail and tree before stopping in brush about 100 feet off the roadway.
Vega, who was not wearing a seatbelt, was ejected from the car, the CHP said. He was taken to Santa Barbara Cottage Hospital for head and other injuries, which were not considered life-threatening.
His unnamed passenger was also ejected from the vehicle and died after being taken to the hospital.
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Vega, also of Oceano, was allegedly under the influence during the accident, the CHP said. He was arrested on suspicion of felony DUI and manslaughter.