Columbine

Leigh Paterson / KUNC

A Florida teenager is dead from an apparent self-inflicted gunshot sound following a nearly 24-hour manhunt.

Sol Pais flew into Denver International Airport Monday night. She then bought a pump-action shotgun from a gun shop in Littleton near Columbine.

Columbine Memorial
Leigh Paterson / KUNC

For generations, many activists who have called for stricter gun regulations can point to a mass shooting that spurred them to act. Movements sprung from Sandy Hook, the Pulse nightclub shooting, Parkland — and the list continues to grow.

Columbine was no different.

Jefferson County Sheriff's Office

2:30 p.m. update: Gun store owner releases statement

The Littleton gun store that sold Pais a shotgun says they did so legally. The owner of Colorado Gun Broker posted on Facebook that Pais went through a full background check and was cleared by NICS and the Colorado Bureau of Investigation.

SQFP / Flickr - Creative Commons

Twenty years after the Columbine High School shooting made practicing for armed intruders as routine as fire drills, many parents have only tepid confidence in the ability of schools to stop a gunman, according to a new poll by The Associated Press-NORC Center for Public Affairs Research.

Columbine High School
Leigh Paterson / KUNC

It looks a lot like any other high school: blue lockers, fluorescent overhead lights, kids carrying musical instruments and gym bags.

But Columbine High School's history as a site of a deadly school shooting sets it apart. Some of the changes are physical — the building has a new library to replace the old one, where a majority of the students were killed that day. Now, a plaque is mounted at the library's entrance, dedicated to the 13 victims.

Evan Todd
Leigh Paterson / KUNC

Evan Todd still has sharp memories of April 20, 1999. As a sophomore at Columbine High School, he was in the library with his friends on that cool, sunny morning, attempting to write a paper but really just goofing off, throwing around wads of paper.

In an instant everything changed. Todd described an explosion, smoke, and then pops of gunfire echoing through the hallways. He felt a rush of adrenaline as panic set in around him.

Colorado's program allowing anonymous tips about threats has a new leader.

Attorney General Phil Weiser announced Friday that Essi Ellis will become the director of the Safe2Tell program starting Monday.

Families of the Columbine High School shooting victims gathered at the school on Saturday to tell their stories nearly 20 years after the tragedy, and they spoke of forgiveness, inclusion and healing, and the balm that sometimes only silence can bring.

Courtesy of the Jefferson County Sheriff's Office

Authorities say there is no threat to Columbine High School, but students will be kept inside for the rest of the school day after someone called in a bomb threat against the school.

Matt Bloom/KUNC

Underneath a blue sign reading “I will vote” in bold white print, 17-year-old Carlos “Carlitos” Rodriguez addressed a crowd in Littleton, Colorado about life since a former student shot and killed 17 of his peers at Marjory Stoneman Douglas High School in Parkland, Florida.