Thursday, March 3, 2005 9:57 a.m.–10:00 a.m. MST (UTC−07:00)
Attack type
Mass shooting, murder-suicide, shootout, ambush
Weapons
Heckler & Koch HK-91
9mm Beretta 92FS handgun
Remington .22-caliber rifle
12-gauge Winchester 1300 Defender shotgun
Husqvarna Model 9000 .308
Two Lee-Enfield .303-caliber bolt-action rifles
12-gauge Remington 870 shotgun
Winchester Model 70 XTR .300 Winchester Magnum
Smith & Wesson Model 5946 9mm handgun (Used by the RCMP members)
Deaths
5 (including the perpetrator)
Perpetrator
James Roszko (age 46)
Mayerthorpe
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Location of Mayerthorpe, Alberta
The Mayerthorpe tragedy occurred on March 3, 2005, on the farm of James Roszko, approximately 11 km (6.8 mi) north of Rochfort Bridge near the town of Mayerthorpe in the Canadian province of Alberta.
Roszko shot and killed four Royal Canadian Mounted Police (RCMP) constables: Anthony Gordon, Lionide "Leo" Johnston, Brock Myrol and Peter Schiemann. He then committed suicide. The attack occurred as the officers were executing a search warrant for stolen property and a marijuana-growing operation on the farm. Two individuals who were not present at the shooting, Shawn Hennessey and Dennis Cheeseman, pled guilty to manslaughter for assisting Roszko to return to his farm.
The incident was the worst one-day loss of life for the RCMP since five officers drowned on June 7, 1958,[1] and the worst multiple-officer killing in contemporary Canadian history.[2]
^"RCMP's deadliest day". Edmonton Journal. March 4, 2005.
^"4 RCMP officers killed on Alberta farm". CBC News. March 4, 2005. Retrieved October 25, 2014.
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