Arapahoe Ridge High School in Boulder County off lockdown after no weapon found

BOULDER COUNTY, Colo. -- Arapahoe Ridge High School was placed on lockdown for about 90 minutes on Wednesday afternoon on a report of a weapon, but none was found, the Boulder County Sheriff's Office said.

The Boulder Valley School District said a tip was received through Safe2Tell of someone with a gun at the school at 6600 Arapahoe Road about 12:50 p.m.

Deputies conducted a room-by-room search and the school's grounds and found there was no threat, the district said.

The campus returned to normal operations just after 3 p.m. and students were being dismissed.

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