Families of victims from the February 10 mass shooting in Tumbler Ridge, British Columbia, have filed a lawsuit against OpenAI in U.S. federal court, claiming negligence and wrongful death. The shooter, who killed her mother, stepbrother, and five children at Tumbler Ridge Secondary School, had alarming interactions with ChatGPT prior to the attack. Plaintiffs' attorney Jay Edelson criticized OpenAI's lack of action, stating that the company's decisions have devastated the community. OpenAI admitted to having flagged the shooter's account for discussing violence but determined it did not warrant a referral to law enforcement. Following the incident, OpenAI has strengthened its safeguards, aiming to improve how ChatGPT responds to signs of distress and potential threats. The lawsuit seeks damages and a court order requiring OpenAI to notify authorities when users pose a real-world risk of violence. This case is part of a broader legal strategy by families affected by similar tragedies involving AI interactions.