Update, 4:00 p.m. Friday from Superintendent Mike Matthews: "As was the case on Monday, the Manhattan Beach Police Department has declared that no suspicious activity exists at Mira Costa High School. We thank them for their quick and thorough support.  Our campuses are open and we will be ready for students on Monday. As a precautionary measure, MBPD will be present at Mira Costa and all MBUSD schools throughout Monday."

Mira Costa High School is closed Friday for the second day this week after receipt of a threat.

Out of an abundance of caution, nearby Pennekamp Elementary School has also been closed for the day, according to Manhattan Beach Unified School District Superintendent Mike Matthews.

"I'm as sorry as anybody to be having this conversation again, but we received yet another threat to Mira Costa High School, this time via email, and we have been in contact with police and we have made the decision to close Mira Costa for the day," said Matthews. "We have also decided, because of proximity, to close Pennekamp for the day."

The threat, received by email, was "specific in nature," according to Matthews. He promised to stay in touch with parents throughout the day.
Mira Costa was closed Monday after students had arrived, with students sent home for the day, after a threat was phoned in to the school office. Nothing suspicious was found on campus, as more than 80 law enforcement and emergency personnel scoured each classroom and facility along with nine canine units, according to MBUSD. The initial phone call is being investigated.