MAYERTHORPE — 2005 · Murder

The Mayerthorpe Tragedy — Four RCMP Officers Killed

SolvedSources: ALast updated: 14 October 2026

On 3 March 2005, at a farm near Mayerthorpe, Alberta, four young Royal Canadian Mounted Police officers searching for stolen property and a cannabis-growing operation were ambushed and killed by the farm's owner. The gunman, who had a record of violent offences and was banned from possessing firearms, had slipped back onto the property overnight and hidden in a Quonset hut; he opened fire on the officers and then took his own life. It was the RCMP's worst single-day loss since 1958. Two men who had helped him return to the farm pleaded guilty in 2009 to four counts of manslaughter and were jailed. A fatality inquiry made recommendations on RCMP procedures.

Date
2005
Place
Alberta, Canada, Mayerthorpe, CA
Category
Murder
Case Status
Solved
Coordinates
54.0300, -115.0700 ↗

Timeline of Events

  1. 2 March 2005Bailiffs visited the farm; police were called and a search began.
  2. 3 March 2005The hidden gunman killed four RCMP officers and then himself.
  3. 19 January 2009The two men pleaded guilty to manslaughter.

Sources

Source grade A: several independent sources, at least one an official record or reference work. If you spot a mistake or something missing, report it with "Suggest a correction" in the app.

Related Cases

More cases from the 2000s

See all ›

Categories

🕯️ This record was prepared with respect, in memory of those who lost their lives.