Authorities say an 18-year-old man has died and at least seven others have been injured in a shooting at a school in Colorado, United States.
Local media reports the incident took place at STEM School Highlands Ranch in Denver on Tuesday afternoon (local time).
In a statement on Twitter, the Douglas County Sheriff's Office confirmed two shooters had been arrested.
"It is with extreme sadness that we can confirm that one student at the STEM School was killed in today's #stemshooting incident.
"One adult male, one [juvenile] male in custody. No other suspects.
"No staff or officers injured."
The statement said the immediate family of the dead student had been notified.
Earlier, police said at least seven students had been injured.