(RNN) - Police report that the gunman has been found dead inside Arapahoe High School in Centennial, CO which is part of the Littleton, CO school district.
The shooter died of a self-inflicted gunshot wound, according to Arapahoe County Sheriff Grayson Robinson.
"We know the suspect was a student at Arapahoe High School," Robinson said. "We have his identity and we are currently in contact with his family."
During a news conference, police reported there were two victims. There is one student who was taken to Littleton Adventist Hospital in serious condition. A second student was wounded, but Robinson indicated the wounds are not serious and may not be a gunshot wound.
Police said the shooter was reportedly targeting a specific teacher.
"No other weapons were found other than the one that was used in the shooting," Robinson said. "The student identified a specific teacher at Arapahoe High School that he was interested in confronting. That teacher was informed of the situation and exited the school quickly."
Whitney Riley, a 15-year-old student at the school, barricaded herself in a sprinkler room with other students until they heard teachers telling others to run.
The evacuation of hundreds of students was calm and orderly. Students were taken to the track on campus where they were patted down and searched by law enforcement using metal detectors.
Students were evacuated and waited to be searched waited quietly with their hands over their heads. A pickup site for parents is at a nearby church.
"The response protocols around active shooters were put into place immediately," Robinson said. "The first deputy sheriffs and police officers that were on scene immediately entered the school to engage the shooter if they could locate that individual and also keep these students absolutely safe."
Robinson said the initial call came at 12:33 MT and the first report of shooter down came 14 minutes later.
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