Overview
- A Halloween night confrontation at an off‑campus house on Oct. 31 left two 19‑year‑old CU Boulder students shot after officers had earlier cited and shut down a large registered party.
- Boulder Police arrested 18‑year‑old Omar Perez of Thornton on Monday and charged him with first‑degree murder, attempted first‑degree murder and related assault counts; he is being held without bond and has a court hearing set for February 10.
- Investigators say Perez is believed to be the only shooter but continue to seek other people of interest, and they have appealed to the public for photos and video as detectives review dozens of feeds and conduct many interviews.
- The Boulder County Coroner and the university identified the deceased as 19‑year‑old Luca Hanlon, a second‑year media production student, and the surviving 19‑year‑old victim remains hospitalized; the university has asked for privacy for the family.
- Police and prosecutors describe the arrest as a major step in an active investigation that could lead to additional charges and will inform how campus safety and local policing respond to off‑campus gatherings going forward.