Incident·WS-0080·Feb 10, 2026·disclosed Feb 20, 2026 (10 days later)·in the wild·Mental health & violence

OpenAI flagged Tumbler Ridge shooter but didn't alert police

OpenAI / ChatGPT

42/100
WS-3 Serious
Harm score 45, signal score 39. Autonomy: relied on (people trusted bad output). How the scores work.
Harm 2/5
damage actually done
Reach 1/5
who was affected
Autonomy 1/4
how much the AI did on its own
Novelty 3/5
how new the behavior was
Permanence 4/5
how hard it is to undo

A mass shooting in Tumbler Ridge, British Columbia, on 10 Feb 2026 killed eight people plus the shooter. The WSJ reported on 20 Feb that OpenAI had flagged and banned the shooter's ChatGPT account in June 2025 for violent content. Staff had debated a police referral but judged the case below OpenAI's imminent-threat bar. Canada summoned OpenAI executives, OpenAI changed its referral guidelines, and victims' families sued on 29 Apr 2026.

Damage

Mass shooting killed 8 plus the shooter, 27 injured; AI's causal role not established — the incident is the failed escalation

Sources

Wikipedia, second source. The incident is about a failed safety escalation, not AI-generated content causing the attack. A later BC government suit (Sept 2026) alleges leadership overruled the safety team. The WSJ original was not fetched. Harm is rated on the failed escalation, not the shooting itself.

Factor ratings and the score are this index’s judgments by a published formula; facts, dates and figures come from the linked sources. Where a lawsuit is pending, the summary reports allegations, not findings.