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Columbine

John Zawahri is accused of killing five people during Friday's rampage in Santa Monica, according to police. (credit: Santa Monica Police Department)

Threatening Encounter With Gunman And Teachers 7 Years Ago Raised Concerns

An encounter between his high school teachers and John Zawahiri raised concerns seven years ago that he was potentially dangerous.

06/10/2013

(credit: CBS)

New Details Released In Alleged High School Terror Plot In Murrieta

New details have been released about two teenagers who are accused of plotting a mass homicide on a Murrieta high school campus.

CBS2 / KCAL9–09/10/2012

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