Tumbler Ridge Wrongful Death Suits: OpenAI's Forum Non Conveniens Motions Tee Up the First Forum Fight in the AI Mass-Shooting Litigation Wave

Tumbler Ridge Wrongful Death Suits: OpenAI's Forum Non Conveniens Motions Tee Up the First Forum Fight in the AI Mass-Shooting Litigation Wave

OpenAI has moved to dismiss on forum non conveniens grounds in a subset of the 37 federal lawsuits filed by survivors and families of the February 10, 2026 Tumbler Ridge, B.C. school shooting, arguing the cases belong in British Columbia. Per CBC News (September 2026), OpenAI "filed identical motions to dismiss a number of the suits over the past two weeks," contending that "California is not the most appropriate forum for claims by British Columbians attacked by a British Columbian in British Columbia."

The motions lean on both convenience and comity: most evidence and witnesses are in B.C., and the merits would require "an examination of the role of 'Canadian law enforcement, firearms regulations and British Columbia institutions in the events that preceded the shooting'" — including whether Canadian authorities acted reasonably in returning guns to a home after the shooter's prior arson and involuntary hospitalizations. OpenAI also argues the standard of care "may turn on Canadian and British Columbia statutes and community practices — which differ from those in California."

The merits allegations remain the most aggressive product-liability theory yet aimed at a chatbot developer. The plaintiffs claim OpenAI flagged the shooter's ChatGPT account for "gun violence and planning" eight months before the attack but "after a contentious internal debate, made the conscious decision not to warn authorities," and they sue both OpenAI and Sam Altman personally "for designing a dangerous product, ignoring the warnings of their own safety team, refusing to notify authorities when they knew the shooter was planning a mass attack, inviting them back onto the platform after deactivating their account, and choosing profit over the lives of the children of Tumbler Ridge." OpenAI's response on the merits: the claims "blaming OpenAI for a horrific mass shooting by a deeply troubled teenager after systemic failures by the law enforcement, mental-health care, and educational institutions in her community — are not viable," and Altman "was not personally involved in the June 2025 review of the shooter's ChatGPT account."

Where things stand: No ruling on the FNC motions yet — the watch on the Northern District of California's decision remains open. Meanwhile, British Columbia's sovereign suit is still not filed: Attorney General Niki Sharma says the province "is pursuing legal action to hold OpenAI and its decision makers" and has retained legal teams in both B.C. and California seeking damages to cover provincial costs, but no complaint has been docketed.

What it means: The FNC ruling will shape the entire litigation wave — if the N.D. Cal. court ships dozens of B.C. victims' claims to Canada, AI developers gain a powerful template for steering cross-border AI-harm litigation to home courts¹; if the motions fail, developers face U.S. juries on conduct involving foreign users. Enterprises deploying chatbots to multi-jurisdiction user bases should watch how the court weighs the location-of-harm factor against the developer's domicile.