# Families of Tumbler Ridge shooting victims sue OpenAI and Sam Altman, alleging ChatGPT enabled the attack and safety warnings were ignored.

*genai · news · 2026-04-30 · CNBC TV18*

## Key points

- Families allege OpenAI knew of the shooter's ChatGPT conversations eight months before the Tumbler Ridge attack.
- Lawsuits claim OpenAI's safety team recommended contacting police, but leadership overruled the warning.
- The shooter created a new ChatGPT account after deactivation and continued attack planning undetected.
- The lawsuits, filed in California, seek to force OpenAI to adopt mandatory law enforcement referral protocols.
- This is reportedly the first U.S. lawsuit alleging ChatGPT directly facilitated a mass shooting.

**Companies:** OpenAI
**Countries:** Canada, United States

[Read the full story on CNBC TV18](https://www.cnbctv18.com/world/canadian-mass-shooting-victims-families-sue-openai-ceo-sam-altman-in-us-court-chatgpt-ws-l-19896334.htm)

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Canonical: https://newsio.io/n/a364ea07-20cf-4c7d-822e-8786a504d607/families-of-tumbler-ridge-shooting-victims-sue-openai-and-sam-altman-alleging-ch
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