Overview

• Officials said the shooting lasted about nine minutes with roughly 20 rounds, injuring one student inside and another at a nearby intersection before the gunman killed himself.
• The shooter was identified as 16-year-old Desmond Holly, who acted alone according to the Jefferson County Sheriff’s Office.
• Hospitals report Matthew Silverstone, 18, remains in critical condition and a second student is in serious condition after a transfer to Children’s Hospital Colorado.
• The FBI confirmed it opened a July assessment into an anonymous account discussing a mass shooting after an ADL tip but could not identify the user before the attack.
• ADL researchers say the teen spent time on violent gore forums and posted white supremacist and antisemitic content, as deputies credit lockdowns with saving lives and plan to restore a full-time school resource officer when classes resume.