Two stabbed at Edmonton Sikh temple; suspect has history of violence tied to conspiracy theories
Austin Sim-Pelletier, 27, is charged after the August 21 attack at Nanaksar Gurdwara. Parole documents detail his pattern of random assaults fuelled by paranoia.
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Two men were stabbed at the Nanaksar Sikh Gurdwara in northeast Edmonton on August 21. Both suffered non-life-threatening injuries. Austin Sim-Pelletier, 27, is charged with assault and weapons possession in connection with the attack.
Parole documents released this week reveal Sim-Pelletier's pattern of random violence tied to mental health concerns. A July 8 parole board decision by Andrea Menard states his "actions appear to be linked to underlying and unmanaged mental health concerns, particularly delusions and paranoia focused on your and your family's safety." The decision also notes that "delusions centred around new world conspiracies and government control have contributed to a profound distrust of authority, which can manifest as anti-authority behaviour, leading to defiant or hostile actions against perceived threats from government figures or policies."
Sim-Pelletier previously served prison time for a shooting outside a Red Deer school. After his release, he committed a series of random assaults. In August 2024, he attacked a woman who had picked him up, punching her face 5-6 times and causing severe facial injuries. He accused her of stealing money. He carried a large steak knife during that incident and tested positive for marijuana and cocaine. While the woman was bleeding profusely in the driveway, he called police himself. He was later found to meet criteria for spousal assault risk assessment.
In September 2024, while in remand awaiting trial for the August assault, Sim-Pelletier punched a corrections worker in the face "without any warning" during a cell interview. He was sentenced to just over two-and-a-half years in prison for the 2024 assaults and came up for statutory release this year at the two-thirds point of his sentence.
A May 2025 psychological assessment found his risk of reoffending was linked to his "general unpredictable nature when experiencing paranoia and delusions." Sim-Pelletier refused to participate in that assessment. The parole board has the power to impose conditions such as residing at a halfway house, though it is unclear whether such conditions were attached to his July release. Edmonton police are investigating the gurdwara attack; hate crime investigators are assisting.
What specific conditions, if any, were imposed on Sim-Pelletier's July statutory release?
What triggered his release despite the pattern of escalating violence documented in parole records?
We'll update this story as answers emerge.
The facts
How many people were injured in the Edmonton temple attack?
Two men were stabbed at the Nanaksar Sikh Gurdwara on August 21, both suffering non-life-threatening injuries.
Who is charged in the gurdwara stabbing?
Austin Sim-Pelletier, 27, is charged with assault and weapons possession in connection with the attack.
What mental health concerns does the parole board document cite?
A July 8 parole board decision states Sim-Pelletier's actions are linked to delusions and paranoia about his family's safety, and conspiracies involving government control and new world theories, fuelling distrust of authority.
What prior violence is documented in Sim-Pelletier's record?
He previously served prison time for a shooting outside a Red Deer school. In August 2024, he punched a woman who picked him up 5–6 times, causing severe facial injuries. In September 2024, while in remand, he punched a corrections worker without warning.
