George Stone, principal of Aspen Valley Alternative High School, tells The Gazette more than 100 students were forced to leave the school for about an hour Friday afternoon while a hazardous materials crew from the Colorado Springs Fire Department checked on the spill.

Officials determined that all of the chemicals were safely intact inside the cabinet, and that the residue of a mild corrosive that had previously spilled was responsible for the rusty discoloration on the lock.

(Copyright 2012 The Associated Press. All rights reserved.)