Description: On April 17, 2025, a shooting at Florida State University killed Tiru Chabba and Robert Morales and injured others. Phoenix Ikner, the accused shooter, has pleaded not guilty. In 2026, victims' families and attorneys reportedly alleged that Ikner used ChatGPT before the attack to discuss mass shootings, firearms, campus activity, and media attention, and that OpenAI failed to flag or escalate the exchanges. OpenAI denied responsibility.
Editor Notes: Timeline notes: (1) 04/17/2025: The FSU shooting occurred. (2) Early April 2026: Local reporting first surfaced planned litigation alleging ChatGPT involvement. (3) 04/09/2026: Florida's attorney general publicly announced an investigation into OpenAI and ChatGPT. (4) 05/10/2026: A federal lawsuit was filed alleging OpenAI liability. (5) 05/13/2026: The incident ID was created.
Entities
View all entitiesAlleged: OpenAI developed an AI system deployed by Phoenix Ikner and OpenAI, which harmed Tiru Chabba's family , Tiru Chabba , Robert Morales's family , Robert Morales , Florida State University shooting victims and Florida State University campus community.
Alleged implicated AI systems: OpenAI safety and abuse-monitoring systems and ChatGPT
Incident Stats
Incident ID
1487
Report Count
1
Incident Date
2025-04-17
Editors
Daniel Atherton
Incident Reports
Reports Timeline
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May 11 (Reuters) - The family of a man killed in a 2025 mass shooting at Florida State University has filed a lawsuit against OpenAI in a U.S. court, claiming the shooter was aided by ChatGPT in planning the attack.
The family of Tiru Cha…
Variants
A "variant" is an AI incident similar to a known case—it has the same causes, harms, and AI system. Instead of listing it separately, we group it under the first reported incident. Unlike other incidents, variants do not need to have been reported outside the AIID. Learn more from the research paper.
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