GOLDEN, Colo. - Authorities released nearly 1,000 pages of new documents from the Columbine High School massacre Thursday, including step-by-step plans written by the two killers as they gleefully plotted the deadliest school shooting in U.S. history.

LITTLETON, Colo. - On any other day, with any other crowd, a thunderstorm might have ruined the moment. For the families of the 13 people slain at Columbine High School seven years ago, the dark sky almost seemed a fitting backdrop for the groundbreaking ceremony Friday for the long-delayed memorial to the victims.

Less than a quarter of Corona del Sol High School’s students showed up for classes Friday following a series of threats that violence would occur on the Tempe campus.

East Valley schools remain watchful nearly five years after a student massacre April 20, 1999, at Columbine High School in Littleton, Colo.

An ex-convict is sentenced to die for the fatal shooting in Tempe of his 21-year-old common-law wife, who survived the shootings at Columbine High School in 1999.

A year ago, in the weeks before the anniversary of the Columbine school massacre, several East Valley schools were the scene of cops on campus, students spilling out of evacuated buildings and empty classroom seats belonging to students whose parents kept them home.

Threats that violence will occur at Tempe’s Corona del Sol High School on Friday — — the anniversary of the 1999 Columbine High School shootings — have prompted police to increase their presence on campus this week.

BAILEY, Colo. - The high school in this tiny mountain town was closed Thursday, a day after a mysterious gunman took six girls hostage in a classroom for hours before fatally wounding one and then killing himself as authorities stormed in.

May 18, 2005

Loud pops blasted through the halls of an ASU dormitory Monday as police officers crept through the corridors with weapons drawn.

A 15-year-old Gilbert girl will not likely see any immediate time in juvenile corrections as punishment for disrupting Gilbert High School with a note about a Columbine-type massacre, her attorney said

April 8, 2005

LOS ANGELES - Two teenagers meticulously planned an attack on their high school this year but were arrested before they could carry it out, according to a published report.

A report released Friday by police claims that Gilbert High School officials withheld evidence during an investigation into six students suspected of plotting a massacre.

The Apache Junction Unified School District plans to outfit each classroom in the district this week with a lockdown survival kit.

December 13, 2004

Dressed in long black overcoats and leather gloves, they planned to shoot the school security guards and police officer in the front office first.

May 5, 2005

January 20, 2005

Making a crack about a classmate's weight. Shoving a fellow student against a locker. Such images of bullying in schools are so familiar they almost seem antiquated, a relic of a bygone era that couldn't exist today.But it's just as prevalent as ever, says Robin Todd, Arizona director of national anti-bullying organization Bully Police USA, a group that works to get states to pass tough anti-bullying laws. "This is a very serious issue," Todd says. "It's real."

A teenager placed on probation for taking 32 children and a teacher hostage at gunpoint in 2000 will be sentenced to prison Friday for selling four of his antipsychotic pills for $1 at his Mesa high school.