Canada’s BC sues OpenAI over ChatGPT role in Tumbler Ridge school shooting

The Canadian province of British Columbia has sued the California firm OpenAI for failing to notify law enforcement of threats made on its ChatGPT platform before a shooter opened fire at a school in Tumbler Ridge.

The lawsuit, filed in federal court in San Francisco on Monday, names OpenAI and its CEO, Sam Altman, as defendants.

The British Columbia government is seeking financial compensation from OpenAI to cover past and future costs tied to emergency response and community recovery efforts. The lawsuit also seeks a court order forcing the company to overhaul how it identifies and handles user conversations that threaten violence.

Eight victims died in the February 10, 2026 attack in the small town of Tumbler Ridge, in what officials described as one of Canada’s worst mass shootings. The shooter killed her mother and half-brother at their home before going to a secondary school, where she killed five children and an educator, and then died by suicide at the scene.

The shooter, Jesse Van Rootselaar, 18, a former student at the school, had been flagged by ChatGPT’s safety team after her conversations about gun violence, but the company did not alert police.

British Columbia Attorney General Niki Sharma said in a statement that Tumbler Ridge residents deserved answers and accountability.

“This action is an important step toward seeking justice for the families, students, educators and community members whose lives were forever changed,” she said.

She said the lawsuit raises serious questions about the responsibilities of tech firms when they become aware of credible threats of violence.