Mira Costa High School in Manhattan Beach Closed After Yik Yak Threats

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Mira Costa High School in Manhattan Beach is shown in this file photo. (Credit: KTLA)

Mira Costa High School in Manhattan Beach is closed Tuesday after threats were posted on Yik Yak, a social media site criticized because it allows users to post crude, derogatory and threatening remarks.

Manhattan Beach police said the high school was locked down Monday as they investigated an anonymous message stating, “If you go to Costa, you should watch out very closely at school today.”

A second message was posted later that afternoon,  NBC Los Angeles reported.

Police say the threat was “not specific and vague in nature.” They, along with school staff, are continuing to investigate the threats directed at the campus in the 1400 block of Artesia Boulevard.

Click here to read the full story on LATimes.com