Columbine High School Lockout Lifted After Threat on Thursday

January 23, 2014 Updated: July 18, 2015

Columbine High School in Colorado was on lockout–not lockdown–after a threat on Thursday, but the lockout was later lifted.

The nature of the threat, which was received via phone calls, was never revealed.

Other area schools were also under lockout.

Story developing; check back for updates

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