Mira Costa High School In Manhattan Beach Threatened A 3rd Time In A WeekMira Costa High School in Manhattan Beach was placed on lockdown Monday due to an unspecified threat, the third time in the past week that the school has been targeted by a threat.
Twitter Threat Prompts Lockdown At High School In Pico RiveraA threat on a Twitter account Thursday prompted a lockdown at El Rancho High School in Pico Rivera, and authorities say a male student was detained for questioning.
Instagram Account Threatens San Dimas Student: 'We Plan To Kill Her'Parents of students at Lone Hill Middle School in San Dimas are concerned after an Instagram account surfaced, made by someone threatening to kill a student.
Mira Costa High School Closed Tuesday Over Alleged School ThreatA high school in Manhattan Beach will be closed Tuesday after a second day of threats against the school, authorities said.
OC School To Be Closed For Third Straight Day Over Email ThreatA private school in Orange County will remain closed for a third day Thursday after the school received an email threatening a shooting on the campus.
School In Aliso Viejo Receives Safety Threat Over EmailSt. Mary of All Angels, a school in Aliso Viejo, who was on the receiving end of an emailed-in threat Monday.
Police: Santa Clarita Teen Made School-Shooting Threats As PrankA 15-year-old boy has been arrested for allegedly making an online threat to shoot students in the Santa Clarita Valley.
Boy, 12, Threatened To Shoot 23 Students, Teacher At San Diego-Area Middle SchoolA 12-year-old boy has been arrested and taken to a hospital for evaluation after allegedly threatening to shoot 23 students at a teacher at a San Diego-area middle school.

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