Columbine High School and nearby schools in Colorado were placed of lockout status after a series of threatening phone calls.

Under the lockout, school business goes on as usual, but no one can enter or leave the building. The alert has since been lifted.

From Los Angeles Times:

“We’ve had several phone calls back-to-back threatening Columbine High School,” [sheriff’s spokesman Mark ] Techmeyer said. “We’ve had hundreds of these since the massacre and we take them all seriously. It is normally a short-lived event.”

Read more at Los Angeles Times

In 1999, Columbine High School became the scene of one of the nation’s worst massacres when two students killed 12 students and a teacher. Before committing suicide, the two injured 24 other students.

Deputies have been dispatched to the high school.

We will keep you updated on the developments of this story. 

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