A truck launched through a guardrail and fell nearly 60 feet from a highway overpass into a crowded San Diego park Saturday afternoon, killing at least four people police said.

Police said several others were injured at Chicano Park, where a group of about 100 people were celebrating the La Raza Run motorcycle festival, according to KNSD.

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The driver is alive but was hospitalized with critical injuries. He also was arrested and charged on suspicion of DUI.

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Corbin Spencer, right, field director of New Georgia Project and volunteer Rodney King, left, help Rueke Uyunwa register to vote. The influential group is shutting down after more than a decade. (Hyosub Shin/AJC 2017)

Credit: Hyosub Shin