ADAMS COUNTY, Colo. -- Big Picture College and Career Academy and an administration building were placed on lockdown on Wednesday as deputies investigated a Safe2Tell tip that someone had a gun and was going to "shoot up the school," Mapleton Public Schools said.
The academy at 7480 Broadway, just northwest of Interstate 25 and Highway 36, is one of four on a large campus. The lockdown was lifted just before 3 p.m. after the sheriff's office declared the academy safe.
Broadway was closed between Greenwood Boulevard El Paso Street for the investigation but has since reopened.
The district said after the tip was received, the administration building and Big Picture College and Career Academy were placed on lockdown "out of an abundance of caution."
Chief Operating Officer Dave Sauer said the Safe2Tell tip received at 12:35 p.m. said someone saw a student with a gun and threatened to "shoot up the school."
Global Primary Academy, Global Intermediate Academy and Global Leadership Academy were placed on lockout.
Deputies with the Adams County Sheriff's Office searched the school and said there was no indication anyone had a gun. No arrests were made, the sheriff's office said.
Sauer said students are drilled twice a year on lockdown drills and the school's principal said the students "performed well."
Deputies later began directing students and staff to certain areas on campus during the search and investigative process before the lockdown was lifted.