A teenager died in a shooting at a Colorado high school – days before his graduation – while charging one of the attackers, his classmates say.

Eighteen-year-old Kendrick Castillo was the only fatality in Tuesday’s assault allegedly by two students near Denver.

Eight other pupils were injured before the assailants were arrested.

The attack took place just 8km (5 miles) from Columbine High School, the site of one of the country’s most notorious shootings 20 years ago.

America’s latest school shooting unfolded at the STEM – science, technology, engineering and math – School Highlands Ranch in an affluent suburb of Denver.