RIO VISTA (CBS13) – A 19-year-old Antioch resident has been arrested on suspicion of DUI after a deadly crash in San Joaquin County.

The crash happened around 4 a.m. Sunday on Highway 12, near the Mokelumne River Bridge between Rio Vista and the community of Terminous.

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According to California Highway Patrol’s Stockton division, officers found a car had gone off the north shoulder and crashed into a lamp post. Two passengers, who officers say weren’t wearing seatbelts, were ejected in the crash.

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One of those passengers was pronounced dead at the scene by medics. The other was taken to the hospital with major injuries.

The driver, 19-year-old Ainise Taimani, has been arrested. Officers say Taimani was driving drunk at the of the crash.

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Authorities have not released the names of the two passengers.