A student armed with a shotgun killed himself after opening fire at a Colorado high school, wounding two fellow students, police said Friday.

Arapahoe County Sheriff Grayson Robinson said the armed student entered the school and said he was looking for a specific teacher. Robinson said another student confronted the gunman and then was shot.

He said police later found another student inside the school whose injuries were considered minor.

The shooting took place at Arapahoe High School, located about 8 miles from Columbine High School in Littleton, Colorado, where 13 people were killed in a massacre in 1999.

The Associated Press quotes a hospital spokesman as saying the wounded student was taken into surgery.

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