Columbine High School massacre

People visit the Columbine Memorial before a vigil at the site for the victims of the massacre at Columbine High School nearly 20 years ago Friday, April 19, 2019, in Littleton, Colo. (AP Photo/David Zalubowski)
April 20, 2019 - 7:50 pm
LITTLETON, Colo. (AP) — Community members in suburban Denver marked the 20th anniversary of the Columbine High School shooting Saturday with a remembrance ceremony that celebrated the school's survival and by volunteering at shelters, doing neighborhood cleanup projects and laying flowers and cards...
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FILE - This combination of undated photos released by the Jefferson County, Colo., Sheriff's Office on Tuesday, April 16, 2019 shows Sol Pais. A Colorado undersheriff who led the search for the Florida teen whose actions prompted tightened security at Columbine High School says she likely killed herself on Monday evening, April 15, 2019, before police launched a massive manhunt. FBI officials were concerned that Pais, 18, planned an attack of her own because she was "infatuated" with the 1999 Columbine school shooting. Her body was found west of Denver on Wednesday. (Jefferson County Sheriff's Office via AP, File)
April 19, 2019 - 11:13 pm
DENVER (AP) — A Colorado undersheriff who led the search for a Florida teenager whose actions prompted tightened security at Columbine High School ahead of the 20th anniversary of an attack there that killed 13 people said she likely killed herself before police launched a massive manhunt. Clear...
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Frank DeAngelis, center, who was principal at Columbine High School during the massacre almost 20 years earlier, fights back tears during a faith-based memorial service for the victims at a community church, Thursday, April 18, 2019, in Littleton, Colo. (Rick Wilking/Pool Photo via AP)
April 19, 2019 - 6:25 am
LITTLETON, Colo. (AP) — A Colorado community changed forever by the attack that killed 13 people at Columbine High School moved ahead Thursday with ceremonies marking the anniversary of the tragedy while awaiting more details on what led a Florida teen "infatuated" with the shooting to buy a...
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This combination of undated photos released by the Jefferson County, Colo., Sheriff's Office on Tuesday, April 16, 2019 shows Sol Pais. On Tuesday authorities said they are looking pais, suspected of making threats on Columbine High School, just days before the 20th anniversary of a mass shooting that killed 13 people. (Jefferson County Sheriff's Office via AP)
April 17, 2019 - 10:22 pm
LITTLETON, Colo. (AP) — A Florida teenager who authorities say was obsessed with the Columbine school shooting and may have been planning an attack in Colorado just ahead of the 20th anniversary was found dead Wednesday in an apparent suicide after a nearly 24-hour manhunt. The body of 18-year-old...
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FILE - In this May 1, 1999, file photo, demonstrators gather on the Colorado State Capitol grounds in Denver, Colo., to protest against the National Rifle Association's annual meeting, which is being held in the city. Data shows that such shootings are less frequent and with fewer killed than in the years that preceded Columbine. Still, Americans worry about how safe schools are. (AP Photo/Eric Gay, File)
April 17, 2019 - 7:55 pm
The deadly attack at Columbine High School in 1999 seemed to usher in a new era of school shootings. Two decades later, polls consistently capture growing fears among American parents that their children face imminent danger whenever they go to school. Those fears have only intensified since...
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In this April 9, 2019, photo, Grant Whitus poses for a portrait at his home in Lake Havasu City, Ariz. Whitus' marriage fell apart a year after he led his SWAT team into Columbine High School's library, where he was the first to find the dead children's bodies. (AP Photo/John Locher)
April 17, 2019 - 10:51 am
LITTLETON, Colo. (AP) — The first SWAT team members to see the horror in the Columbine High School library had to step around bodies and ignore a wounded student's plea for help as they searched for shooters they didn't know had already died by their own hands. As member Grant Whitus put it,...
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This combination of undated photos released by the Jefferson County, Colo., Sheriff's Office on Tuesday, April 16, 2019 shows Sol Pais. On Tuesday authorities said they are looking pais, suspected of making threats on Columbine High School, just days before the 20th anniversary of a mass shooting that killed 13 people. (Jefferson County Sheriff's Office via AP)
April 17, 2019 - 5:15 am
LITTLETON, Colo. (AP) — The Latest on threats that put Denver-area schools on alert (all times local): 5 a.m. Police in South Florida say a young woman being sought for allegedly posing a credible threat that has put Denver-area schools on lockdown was reported missing on Monday night by her...
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This combination of undated photos released by the Jefferson County, Colo., Sheriff's Office on Tuesday, April 16, 2019 shows Sol Pais. On Tuesday authorities said they are looking pais, suspected of making threats on Columbine High School, just days before the 20th anniversary of a mass shooting that killed 13 people. (Jefferson County Sheriff's Office via AP)
April 17, 2019 - 12:47 am
LITTLETON, Colo. (AP) — Authorities said Tuesday that they are looking for a young woman who is "infatuated" with the 1999 shooting at Columbine High School and made threats just days before the 20th anniversary of the attack that killed 13 people. The undisclosed threats led Columbine and several...
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A student leaves Columbine High School late Tuesday, April 16, 2019, in Littleton, Colo. Following a lockdown at Columbine High School and other Denver area schools, authorities say they are looking for a woman suspected of making threats. (AP Photo/David Zalubowski)
April 17, 2019 - 12:38 am
LITTLETON, Colo. (AP) — The Latest on lockdowns at Columbine High School and other Denver-area schools (all times local): 10:35 p.m. Investigators say a woman who made undisclosed threats that led to tightened security at Columbine High School bought a pump-action shotgun and ammunition shortly...
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Democratic presidential hopeful John Hickenlooper, right, hugs Michael Davis during a meeting with survivors of victims of mass shootings in Colorado Tuesday, April 16, 2019, in Denver. Michael Davis lost his daughter, Claire, in December 2013 during a shooting at Arapahoe High School in Littleton, Colo. (AP Photo/David Zalubowski)
April 16, 2019 - 6:56 pm
DENVER (AP) — Former Colorado Gov. John Hickenlooper on Tuesday met with survivors of the Columbine High School attack and other survivors of the state's mass shootings just four days before the 20th anniversary of the Columbine massacre. Hickenlooper, who is seeking the 2020 Democratic...
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