• The incident occurred Thursday at about 9:30 p.m. on an RTD bus in Lakewood, Colorado.
• One Lakewood police officer was killed and three officers were wounded.
• One civilian bystander was injured with non‑life‑threatening injuries.
• The suspect was killed by police gunfire during the same exchange.
• Witness Teddy O'Brien reported hearing roughly 20 shots.
• All injured were taken to Denver Health Medical Center and CommonSpirit‑St. Anthony Hospital.