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Yik Yak Bomb Threat Puts San Clemente High on Lock Down — Carolyn Costello Reports

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A campus lockdown at San Clemente High School has been lifted after authorities searched the school early Thursday after a threat was posted on a social media app. The bomb threat was posted on Yik Yak, a social media site on which users can post anonymous comments. Carolyn Costello reports for the KTLA 5 News at 10 on Thursday, March 6, 2014.