The suspected DUI driver of a minivan that crashed in Napa County on Sunday, killing six people , has been convicted of DUI three times and was on probation at the time of the crash, authorities said Tuesday.

The crash happened on Sunday evening along Pope Valley Road in northern Napa County. The California Highway Patrol said a Toyota Sienna minivan left the roadway and struck a tree. Six people were pronounced dead at the scene, while the driver and another occupant were airlifted to a hospital with major injuries.

As of Tuesday, two of the six men killed in the crash have been identified. The CHP said none of them had any identification on them at the time of the crash, and they believe all the men are farmworkers who lived in or near Stockton.

Loreto Ricardo Hernandez, 42, Stock

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