AdvertisementFBI Says Armed Woman Obsessed With Columbine Apparently Killed Herself In Denver AreaApril 17, 2019Merrit KennedyJames DoubekfacebookEmailA student leaves Columbine High School late Tuesday in Littleton, Colo. The school was closed Wednesday while authorities looked for a woman they said presented a credible threat ahead of the 20th anniversary of the mass shooting there. (AP)