Hammer attack on Columbine students
Two Columbine High School students have been hurt when they were attacked by another student with a hammer.
A 14-year-old suspect was arrested and faces assault charges. Police said the condition of the two students was not known.
The Littleton high school in Denver was the scene of one of the worst school attacks in US history.
Students Eric Harris and Dylan Klebold opened fire on April 20, 1999, killing 12 classmates and a teacher and wounding 26 others before killing themselves in the school's library.