The student entered Arapahoe High School in a Denver suburbaround midday brandishing the gun and asked for the teacher byname before shooting two students, critically wounding a15-year-old girl, said Arapahoe County Sheriff Grayson Robinson.
The teacher immediately fled the school and was not injured,while the gunman was later found in a classroom at the school,dead of an self-inflicted gunshot wound, Robinson said. Theincident was over in 14 minutes.
"I believe the shooter knew that deputy sheriffs wereimmediately about to engage him and I believe that shooter tookhis life because he knew that he had been found," the sherifftold a news conference.
Authorities did not name the suspected gunman.