OpenAI Flagged Canada Suspect Eight Months Before Mass Shooting

Feb. 21, 2026, 12:30 AM UTC

OpenAI flagged and banned the suspect in one of Canada’s worst-ever mass shootings for violating ChatGPT’s usage policy June last year, without referring her to police.

The artificial intelligence company said that the suspected killer — Jesse Van Rootselaar — had an account that was detected about eight months ago by systems that scan for misuse, including the possible furthering of violent activities.

Canadian police alleged that the 18-year-old killed eight people and injured about 25, before taking her own life in the remote western Canadian town of Tumbler Ridge earlier this month.

OpenAI identified an account associated with Van ...

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