DENVER -- Manual High School in Denver was placed on lockdown late Wednesday afternoon.
The principal said in a message there was a report of a weapon on campus at 1700 E. 28th Ave. Denver Public Schools said students and staff were safe.
The Denver Police Department said there was a report of an armed juvenile on campus. The school resource officer was notified and the school was put on lockdown.
Investigators said two juveniles were taken into custody and one was identified as the one who sparked the lockdown.
Police didn't comment about whether a weapon was found. Students were being allowed to leave the building just before 4 p.m. and the lockdown was lifted.