Denver police arrested two armed juveniles who allegedly broke into a middle school late Monday night, believed to be carrying BB guns. The suspects were nabbed after a three-hour “cat-and-mouse" game. The overnight janitors at the Noel Middle School called police after noticing the break-in, and officers called in the bomb squad after noticing the boys' backpacks. Police attempted to communicate with the boys via the school’s PA system. It’s still unclear if the school will be open Tuesday.