OpenAI debated calling police about suspected Canadian shooter's chats

February 21, 2026

TL;DR

An 18-year-old suspect in a Canadian mass shooting allegedly used OpenAI's ChatGPT in concerning ways.
The suspect's chats describing gun violence were flagged by monitoring tools and banned in June 2025.
OpenAI staff debated reporting the behavior to Canadian law enforcement but initially chose not to.
The suspect also created a mass shooting simulation game on Roblox and posted about guns on Reddit.
The suspect's instability was known to local police, who had responded to a fire incident at her home.

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