LITTLETON, Colo. -- Investigators want to question a person of interest about a pipe bomb and two propane tanks that failed to detonate at a Colorado mall that were found after a security guard extinguished a fire.
Investigators on Thursday released a third photo of the person. In two photos, he is seen entering a stairwell and carrying a white plastic bag. The latest shows him on an escalator inside the Southwest Plaza Mall.
Firefighters found the devices after the fire that prompted the evacuation of the mall around noon Wednesday. No one was injured and the devices didn't explode.
