Two students have been injured during a shooting at Arapahoe High School, in Centennial, Colorado.
According to the local Sheriff, the shooter was a student at the school.
He is now dead, apparently of self-inflicted wounds.
One student has been taken to hospital with gunshot wounds. He is said to be in a serious condition.
A second was found when police searched the school. He apparently has minor injuries, which may not be gunshot wounds.
The shooting comes a day before the anniversary of a similar incident at Newtown in Connecticut in 2012.
On December 14th 2012, 20 year old Adam Lanza killed twenty children and six adults at Sandy Hook Elementary School, in an incident which is still unexplained.