| 2017 Copper Canyon Apartment Homes shooting | |
|---|---|
  Highlands Ranch Highlands Ranch (Colorado)  Highlands Ranch Highlands Ranch (the United States) | |
| Location | |
| Date | December 31, 2017 5:20 – 7:30 a.m. (UTC-7:00) |
| Target | Sheriff's deputies |
Attack type | Mass shooting, shootout |
| Weapon | AR-15 rifle |
| Deaths | 2 (including the perpetrator) |
| Injured | 6 |
| Perpetrator | Matthew Edward Riehl[1] |
| Motive | Unclear |
The Copper Canyon Apartment Homes shooting was a mass shooting on December 31, 2017, in Highlands Ranch, Colorado. One police deputy, Zackari Parrish, was fatally shot, and four others were wounded. Two civilians were also shot by the gunman, who was later killed in an exchange of gunfire with a SWAT tactical team. The perpetrator reportedly used a rifle and a shotgun. Law enforcement had responded first to a noise complaint, then to a domestic-disturbance call to the apartment. During the second visit, the perpetrator barricaded himself in his bedroom and shot the deputies in an "ambush" style when they entered. The perpetrator was later shot dead by a police tactical team that subsequently re-entered the apartment.[2] It was later determined that the perpetrator, former attorney[3] Matthew Riehl, was a veteran with a history of psychotic episodes and he had recently stopped taking his medication.[4][5][6]
- ^ "Colorado shooting: Suspect identified as Matthew Riehl". CBS News. December 31, 2017. Retrieved December 31, 2017.
- ^ MacNamee, Garreth (December 31, 2017). "'We have multiple deputies down': One police officer dead and four injured in US shooting". TheJournal.ie. Retrieved December 31, 2017.
- ^ Mitchell, Kristine (January 3, 2018). "From law school to his bloody end, the Colorado shooter's life was full of warning signs". The Washington Post. Archived from the original on February 13, 2023. Retrieved July 3, 2019.
- ^ Sandell, Clayton; Louszko, Ashley; McNiff, Eamon; Coburn, Laura; Mittal, Pavni (May 15, 2018). "Colorado officers describe what happened in horrific 'ambush-style attack' that killed one of their own". ABC News. Retrieved July 3, 2019.
- ^ "Under Siege". Body Cam. Season 1. Episode 10. February 12, 2019. Investigation Discovery. Retrieved July 3, 2019.
- ^ Gibbs, Jessica (February 27, 2018). "Man who killed deputy had marijuana, alcohol in his system, report shows". Castle Rock News-Press. Retrieved July 3, 2019.