1 dead, 8 injured in Colorado shooting

HIGHLANDS RANCH, Colorado - Two high school students shot and killed a classmate and injured eight others at a charter school in a Colorado community that marked the 20th anniversary of one of the nation's worst school shootings just weeks ago.

Douglas County sheriff's officials said Devon Erickson, 18, and a younger student walked into the STEM School Highlands Ranch on Tuesday afternoon and opened fire on students in two classrooms, prompting students to run shouting through the halls or to hide out of sight as gunfire echoed through school.

"At the moment no one really knew what was going on so I didn't know they were bullets," said seventh-grader Sophia Marks. "I just kind of saw, like, flashes and we heard bangs."