Birthday party ends in tragedy in Colorado

Six dead in shooting at Colorado party

Boulder massacre: "A bullet was fired in my direction".

Colorado massacre survivor recounts the horror of her ordeal

"I thought I was going to die," recounts Hispanic man who escaped shooting in #Boulder, Colo.

Authorities remain tight-lipped on #Boulder shooting.

9 civilians and 1 police officer killed in Colorado shooting

Suspect in Boulder shooting identified as 21-year-old man

Police and several civilians killed in Colorado shootout

Recounting the five Colorado shootings that have shocked the nation

Moments of panic during a shooting in #Colorado.

#Boulder: suspect to face 10 counts of murder

Boulder massacre: what leads are the authorities in charge following?

Nine civilians and one police officer killed in Colorado shooting