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Authorities are investigating a shooting at Arapahoe High School in Centennial, Colo.
An official said in a press conference Friday afternoon that the shooter is dead and another person is in critical condition in the hospital.
Arapahoe High School has more than 2,000 students and it is located about eight miles from Columbine High School, scene of a mass school shooting in 1999.
Students of Arapahoe High School had to evacuate the building after the shooting.
There is an ongoing investigation.
Police were outside the school, and students were seen walking toward
the school's running track with their hands in the air. Television
footage showed students being patted down.