The government of British Columbia filed a lawsuit in California against artificial intelligence firm OpenAI on September 21, 2026, alleging that the company failed to alert police to concerning chats between an 18-year-old shooter and ChatGPT before a mass shooting that left eight people dead in Tumbler Ridge.
The Tumbler Ridge Tragedy and the B.C. Government Lawsuit
The province of British Columbia initiated legal action in a U.S. district court in San Francisco, seeking accountability and cost recovery following the February attack. Attorney General Niki Sharma announced the filing, stating that the provincial government and the Tumbler Ridge school district are pursuing compensation for damages, foreseeable harm, and injunctive relief, including reimbursement for the construction of a new secondary school after the original building was slated for demolition.
The B.C. government lawsuit against OpenAI names the company, CEO Sam Altman, and associated entities as defendants. The complaint alleges negligence, product defectiveness, and aiding and abetting a mass shooting,
asserting that the deactivation of the shooter’s account failed to stop the risk of harm as the individual engaged with the chatbot through a second account.
Internal Reviews, Banned Accounts, and the Decision Not to Warn Police
Central to the legal claims is an internal examination conducted by the technology firm prior to the massacre. Sharma noted that OpenAI confirmed that conversations between the shooter, 18-year-old Jesse Van Rootselaar, and ChatGPT triggered an internal review by employees, yet the threat was never reported to the Royal Canadian Mounted Police.
“OpenAI has confirmed that the conversation between ChatGPT and the shooter was so alarming that it triggered an internal review by OpenAI employees. This threat was not reported to the RCMP and was subsequently dismissed.”
Niki Sharma, Attorney General of British Columbia
According to reporting by CBS News, OpenAI acknowledged that automated abuse detection tools and human investigators flagged and banned Van Rootselaar’s account last June—eight months prior to the rampage. In February, company representatives stated they evaluated whether to contact law enforcement but concluded the account failed to meet the threshold for referral because it did not pose a credible risk of serious physical harm. Altman later issued an apology letter to the small community in British Columbia, stating, I am deeply sorry that we did not alert law enforcement to the account that was banned in June.
Survivor Lawsuits and Allegations Against GPT-4o
Separate from the provincial filing, seven lawsuits were filed in federal court in San Francisco by families of victims. These complaints allege that despite recommendations from multiple staff members to contact Canadian police, leadership decided against reporting the account to protect the company’s reputation.
“OpenAI knew the Shooter was planning the attack and, after a contentious internal debate, made the conscious decision not to warn authorities.”
Lawsuits filed by victims’ families, via CBS News
The legal actions highlight interactions with a discontinued model called GPT-4o, active from May 2024 until February 13 of this year, which utilized memory features to track grievances and establish an affirming tone. The complaints claim the system acted as an encouraging coconspirator
by validating and elaborating violent ideation. In response, OpenAI stated it maintains a zero-tolerance policy for violence, has strengthened safeguards to connect distressed users with mental health resources, and is improving threat detection and escalation procedures.
Broader Scrutiny and Calls for Legal Reform
The legal challenges in California arrive amid mounting regulatory pressure on the artificial intelligence sector regarding chatbot interactions in violent incidents. Florida Attorney General James Uthmeier launched a criminal investigation into the company earlier this month following a review of communications between ChatGPT and a Florida State University student accused of a campus shooting in April.
Asserting that regulatory frameworks have failed to keep pace with technological advancements, Sharma called for amendments to Canada’s Criminal Code to hold technology firms accountable for criminal conduct originating from their products. As the litigation proceeds in U.S. district court, provincial officials continue to press for the disclosure of chat logs, questioning why early warning signs were dismissed.