CENTENNIAL, Colo. -- The student who opened fire inside a Colo. high school Friday wanted to confront a specific teacher, but ended up fatally shooting himself after being confronted by another student, said Arapahoe County Sheriff Grayson Robinson.
The student gunman apparently left two Molotov cocktails behind, authorities said. Robinson said one of the devices found Friday at Arapahoe High School detonated but the other didn't.
Robinson said that two other students were also injured in the incident. The Associated Press reported one student was in critical condition and was in surgery Friday afternoon.
The sheriff said another student had "a very minor wound" that may not have been from gunfire.
Sheriff Robinson said they know the identity of the shooter and were in contact with his family.
The school was placed on lockdown and students exited the building with their hands up in a single file line. As each filed past law enforcement they were patted down and then allowed to put their arms down.
The only weapon found, a shotgun, was the one believed to have been used in the shooting, said the sheriff. He also said that the shooter was "down" inside the school within 14 minutes of the initial call, which came in at 12:33 p.m.
According to CBS Denver, Arapahoe High School has more than 2,000 students. It is located about eight miles from Columbine High School, scene of a mass school shooting in 1999.
Saturday marks one year since the school shooting in Newtown, Conn. that claimed the lives of 20 first-graders and six adults at Sandy Hook Elementary School.
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