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Off-duty cop was at site of deadly California Costco shooting

Police confirm that one man was killed and others were injured, after a deadly shooting broke out at a Costco in California. Witnesses say they heard seven or eight gunshots when the violence erupted. There was an off-duty cop inside the Costco, but it's not clear what role they played in stopping the shooting. Nicole Comstock of Los Angeles’ KCBS-TV reports.

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