Two students have been injured in a school shooting in Colorado, the Arapahoe County sheriff has said.
A student believed to be the gunman who brought a shotgun into the school has been found dead of an apparent self-inflicted gunshot wound, he said.
The sheriff said the gunman was looking for a specific teacher, who left the building. A student confronted the gunman and was shot.
It is unclear how the other student received a minor injury.
The school and others in the area were placed on lockdown but Arapahoe County Sheriff Grayson Robinson indicated the threat had ended.
Are school lockdowns panic or preparedness?
Upon the initial reports of a school shooting, heavily armed police trained in “active shooter” scenarios stormed the building, ordering students outside with their hands over their heads.
Inside, they found the dead suspected gunman and two other injured students, one of whom had suffered a minor wound, Mr Robinson said.
Police have not yet released the name of the suspect.
The school has more than 2,200 students and 70 classrooms.
The building is just eight miles (13km) east of Columbine High School in Littleton, Colorado, the site of a mass school shooting in April 1999 which left 14 students dead.
The shooting occurred the day before the anniversary of the shooting in Newtown, Connecticut, in which 20 schoolchildren and six workers were killed at a primary school.
Source : bbc news