The relatives of victim Tiru Chabba say the chatbot provided information on weapons, vulnerable times to strike and how the attack might be covered by the media. OpenAI denies responsibility, saying ChatGPT provided publicly available information and did not encourage illegal activity. The alleged shooter, Phoenix Ikner, has pleaded not guilty. The April 2025 attack in Tallahassee, Florida, killed two people and wounded others. The case adds to mounting scrutiny of AI safety and liability as governments weigh how to regulate powerful chatbot systems. Families of victims of a mass shooting in Tumbler Ridge, Canada, filed a separate suit against OpenAI last month.
