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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A migrant farmworker harvests Vidalia onions at a farm in Collins, in 2011. A coalition of farmworkers, including one based in Georgia, filed suit last month in federal court arguing that cuts to H-2A wages will trigger a cut in the pay and standard of living of U.S. agricultural workers. (Bita Honarvar/AJC)

Credit: Bita Honarvar