Crime & Safety

Boulder HS Lockout Lifted: Police Said Sounds Were Not Gunshots

The sounds that caused a lockout at Boulder High School Monday, may have been a car backfiring, police tweeted.

BOULDER, CO -- Boulder police tweeted that sounds that resembled gunshots and caused a lockout at Boulder High School Monday morning may actually have been a car backfiring.

The school was under a lockout, meaning no outsiders could enter and no one could leave, after police were summoned to investigate the sounds.

The lockout has been lifted as of 11:20 a.m.

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