Mark Alexander Peterson, 35, pleaded guilty in Edmonton's Court of King's Bench Monday to 10 charges including trafficking firearms

A man who was part of an Edmonton-area anti-government extremist group has been sentenced to 4-1/2 years behind bars for amassing a stockpile of unauthorized firearms — including an automatic rifle sold to an undercover police officer.

Mark Alexander Peterson, 35, pleaded guilty in Edmonton’s Court of King’s Bench Monday to 10 charges including trafficking firearms and possessing prohibited and restricted weapons without a licence.

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Peterson came to police attention during an RCMP Integrated National Security Enforcement Teams (INSET) investigation into a group that engaged in “anti-authority, anti-government extremist ideology” online, p

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