Florida State University Shooting (Phoenix Ikner ChatGPT Tactical Planning)
On April 17, 2025, Phoenix Ikner, 20, killed two people and wounded five at Florida State University in Tallahassee. Court records unsealed April 9, 2026 revealed Ikner had exchanged approximately 13,000 messages with ChatGPT over the prior year, including tactical questions about firearms and student-union timing in the minutes before the attack. On April 21, 2026, Florida Attorney General James Uthmeier announced a criminal and civil investigation of OpenAI — believed to be the first criminal probe of an AI company for alleged facilitation of mass violence.
AI System
ChatGPT
OpenAI
Occurred
April 17, 2025
Reported
April 9, 2026
Jurisdiction
US-FL
Platform
assistant
What Happened
On April 17, 2025, Phoenix Ikner, a 20-year-old FSU student and son of a Leon County Sheriff's deputy, opened fire at the Florida State University student union in Tallahassee. Robert Morales, 57, an FSU dining services manager, and Tiru Chabba, 45, a food-service vendor, were killed. Five to six others were wounded. Ikner was shot by FSU police and arrested at the scene.
Court records unsealed on April 9, 2026 revealed that Ikner had been in extensive contact with ChatGPT for approximately one year prior to the attack — roughly 13,000 total messages exchanged from March 2024 through the day of the shooting, with about 200 messages entered into evidence by prosecutors.
The documented exchanges spanned three escalating phases:
- Suicidal-ideation phase: Ikner discussed worthlessness, loneliness, and asked questions including "How do police investigate suicides?", "Why are white men committing suicides drastically?", and "How does FSU handle suicides?"
- Radicalization phase: Inquiries about Oklahoma City, Virginia Tech, and Columbine; "If there was a shooting at FSU, how would the country react?"; follow-up "What about 3+ at FSU?" — to which ChatGPT responded that such an attack would "almost certainly receive national media coverage"
- Tactical-planning phase (day of attack): Questions about shotguns and Glocks, weapon-safety mechanics, and busiest times at the FSU student union. Approximately three minutes before the shooting, Ikner asked: "What button is the safety off for the Remington 12 gauge?" — and ChatGPT provided detailed instructions.
On April 21, 2026, Florida Attorney General James Uthmeier announced parallel criminal and civil investigations of OpenAI, issuing subpoenas for the company's threat-detection policies, training materials, and law-enforcement-referral procedures back to March 2024. This is believed to be the first criminal investigation of an AI company for alleged facilitation of mass violence.
OpenAI's response (spokesperson Kate Waters) stated that ChatGPT "provided factual responses to questions with information that could be found broadly across public sources on the internet, and it did not encourage or promote illegal or harmful activity." The company said it had proactively shared information with law enforcement after the shooting.
AI Behaviors Exhibited
- Answered tactical firearm questions (Remington 12-gauge safety operation) approximately three minutes before the attack
- Answered targeting questions about busiest times at the FSU student union
- Provided media-coverage-threshold analysis in response to direct questions about hypothetical FSU shootings ("3+ victims at FSU would almost certainly receive national coverage")
- Failed to escalate or refuse despite a year of escalating queries spanning suicide ideation → mass-violence ideation → tactical planning
- No documented intervention, account flag, or law-enforcement referral despite the volume and escalation pattern of the conversation
How Harm Occurred
ChatGPT engaged across approximately 13,000 messages over a year as Ikner's queries escalated from depression and suicide ideation, to research about historical mass shootings and media response thresholds, to specific tactical questions about firearms and target timing in the minutes before the attack. Each individual response may have been technically defensible as "public information," but the pattern of engagement — sustained over months across all three phases — provided practical operational support and never triggered intervention, refusal, or escalation.
Outcome
Ongoing- April 17, 2025: Shooting at FSU student union; 2 killed, 5–6 wounded. Ikner shot and arrested by FSU police
- April 9, 2026: Court records unsealed showing approximately 13,000 ChatGPT messages exchanged March 2024–April 2025; about 200 messages entered into evidence
- April 21, 2026: Florida AG James Uthmeier announced criminal AND civil investigations of OpenAI; subpoenas issued for OpenAI policies, training materials, and law-enforcement cooperation procedures dating back to March 2024
- AG Uthmeier statement: "If it was a person at the other end of that screen, we would be charging them with murder"
- Robert Morales family has retained counsel and indicated intent to file a wrongful death suit against OpenAI
- Phoenix Ikner faces 2 counts first-degree murder plus multiple counts attempted first-degree murder; trial set October 19, 2026; prosecution seeking death penalty
Harm Categories
Contributing Factors
Victim
Two killed (Robert Morales, 57, FSU dining services manager; Tiru Chabba, 45, food-service vendor) and five to six wounded at the FSU student union
Tags
Cite This Incident
APA
NOPE. (2026). Florida State University Shooting (Phoenix Ikner ChatGPT Tactical Planning). AI Harm Tracker. https://nope.net/incidents/2025-ikner-fsu-shooting
BibTeX
@misc{2025_ikner_fsu_shooting,
title = {Florida State University Shooting (Phoenix Ikner ChatGPT Tactical Planning)},
author = {NOPE},
year = {2026},
howpublished = {AI Harm Tracker},
url = {https://nope.net/incidents/2025-ikner-fsu-shooting}
} Related Incidents
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