Miami Beach Senior High School has been closed after police investigated an alleged threat.
Miami Beach police said they received a threat through their 911 call center on Wednesday.
A fence has also been put up around the school. Police say all students and staff are safe.
Parents are advised to avoid the area.
At approximately 2:17 p.m., the MBPD announced in an update on Twitter that officers were conducting a secondary sweep of the school grounds.
There have been delays since the school was closed.
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