Mayerthorpe Massacre

• Mayerthorpe memorial honours Fallen Four murdered on the job 20 years ago

  Peter Schiemann, Leo Johnston, Anthony Gordon and Brock Myrol were ambushed and killed 20 years ago in what was one of the largest mass officer murders in Canadian history.

  Canada

  Mar 3, 2025
  
• Sentence expires for man convicted in deaths of 4 Alberta Mounties in Mayerthorpe

  A man convicted for his role in the shooting deaths of four Mounties in rural Alberta is no longer subject to parole conditions.

  Crime

  Jun 13, 2019
  
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• ‘I’m a different person today’: Mayerthorpe Massacre convict Shawn Hennessey granted full parole

  After being granted full parole on Tuesday, Shawn Hennessey said he constantly thinks about the hurt he helped cause by having a role in the shooting deaths of four RCMP officers.

  May 12, 2015
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• UPDATE: Mayerthorpe convict Shawn Hennessey granted day parole

  A man convicted for his role in the shooting deaths of four Alberta Mounties in Mayerthorpe nine years ago was granted day parole at a hearing Tuesday.

  Canada

  Sep 23, 2014