Before he stepped foot into Arapahoe High School on Friday, Karl Pierson scrawled a Latin message on the inside of his forearm in permanent ink. Translation: “The die has been cast.” Also ...

Students are gathered in the athletic fields North of Arapahoe High School where a gunman shot a student and then himself, details coming, in Littleton Colo. Friday Dec. 13, 2013.

Arapahoe High School shooter Karl Pierson wrote this chilling diary entry three months before he rushed inside the building with a bandoleer of ammunition strapped to his chest and a pump-action ...

Colorado high school shooter Karl Pierson had written plans to attack at least five areas of the school on his arm, the Arapahoe County Sheriff’s Office said. CNN values your feedback 1.

Arapahoe High shooter may have ... spree at a suburban Denver high school was armed with 125 rounds of ammunition and three incendiary ... an "indicator to investigators of the shooter's plan." ...

Plans changed for the return to Arapahoe High School as students were not allowed back inside on Monday to get their things. They will be able to return to the school on Thursday and Friday but ...

It looks like any other high school facility where students attend physical education classes by day and participate in interscholastic athletics by night. Yet at Arapahoe High School (established in ...

Karl Pierson, an 18-year-old senior at Arapahoe High School in suburban Denver, had written on his arm the numbers and letters that correlate to specific rooms in the building, Arapahoe County ...