Florida's attorney general, James Uthmeier, announced Tuesday that his office has opened a criminal investigation into artificial intelligence company OpenAI, in connection with a shooting at Florida State University (FSU) in Tallahassee that killed two people and injured six in April 2024. Uthmeier said that chat logs between the suspected gunman, then-20-year-old Phenix Ikner, and OpenAI's ChatGPT chatbot show the system advised him on weapon types, ammunition, optimal attack range, peak crowd times, and the most densely populated areas of the campus. OpenAI denied wrongdoing, stating that ChatGPT provided only factual responses to questions whose answers are widely available online, that it proactively shared the suspect's account information with authorities, and that the tool "did not encourage or promote any illegal or harmful activity." The investigation marks a significant escalation in the ongoing debate over AI regulation in the United States, as Florida and other states push forward with their own legislation amid the absence of comprehensive federal law.