The crash happened around 2 a.m. on Saturday in the Sunset District.
Police say Ryan Kwong, 28, was driving under the influence and speeding when he slammed into a minivan.
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Three people in the minivan went to the hospital and one remains in critical condition.
Kwong and his passenger were not seriously hurt.
San Francisco's police chief confirms Kwong was a member of the department's newest police academy class that graduated on May 15.
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