Chaco, Argentina: Gendarmería says two men were detained after an FBI alert that one of them told ChatGPT he had weapons and a plan for a school shooting
Argentina's Gendarmería Nacional said on 13 October 2026 that its investigators in Presidencia Roque Sáenz Peña, Chaco, under the direction of the federal prosecutor there, opened a criminal investigation after an alert from the US FBI. According to the release, the alert warned of a user in the town who, in consultations on ChatGPT, claimed to have weapons, explosives and ammunition and a detailed plan for a mass shooting at local educational establishments; the release's opening paragraph says the two people involved used ChatGPT to consult and obtain a specific plan for an attack. Gendarmes searched a home on a federal court order, seized notebooks with handwritten plans for the attack, bladed weapons and tools, a fuel can, a book with Nazi symbols, cash and computers, and detained two adults on the judge's order. Infobae, relaying the official information, reports that the target was a university in Corrientes. The accusations are allegations, and what ChatGPT replied is not reported.
- AI system
- ChatGPT (reported)
- Occurred
- Event date unknown
- Reported
- 13 October 2026
- Event location
- Argentina
- What the AI did
- Communicated with the person
- Reported harm
- Loss of LibertyLegal Harm
- Whose AI use
- Their own AI use
- Setting
- Justice
- Evidence
- AI involvement reported · Causal attribution alleged · 3 sources, 1 underlying account
- 6 claims: 6 reported. 5 open questions
- People reported harmed
- 2 people
AI system as recorded: ChatGPT (named by Gendarmería Nacional as the platform "Chat GPT"): the alert concerned a user's consultations on it in which he claimed to have weapons, explosives and ammunition and a plan for a school shooting. Who detected the consultations and passed them to the FBI is not stated.
What Happened
The official account. Gendarmería Nacional's release (argentina.gob.ar, 13 October 2026) says investigators of its Sáenz Peña complex-crimes unit, under the federal prosecutor of Presidencia Roque Sáenz Peña, opened a criminal investigation after an alert issued by the FBI. The complaint warned of a user based in Roque Sáenz Peña (Chaco) who, in consultations on the artificial intelligence platform ChatGPT, claimed to possess weapons, explosives and ammunition together with a detailed plan to carry out a mass shooting at local educational establishments. The release's opening paragraph says the two people involved used ChatGPT to consult and obtain a specific plan for an attack on an educational centre. On a federal court order and with the local explosives section, gendarmes searched the home and seized two notebooks with handwritten notes on the logistics of the attack, ten bladed weapons and tools, a metal fuel can, a book with Nazi symbols, 3,280,000 pesos in cash, phones, notebooks, a desktop computer and storage devices. On the judge's order, two adults were detained and held at the court's disposal.
The press. Infobae (13 October 2026), citing the official information, adds that investigators analysed IP addresses and social networks and did field work near the university, which it names as the target, a university in Corrientes. Perfil relays the same account, citing the NA agency. The press items rest on the Gendarmería account and are not independent of it.
Not established. Who detected the ChatGPT consultations and how they reached the FBI, what ChatGPT replied or whether it supplied any plan, the date of the search and detentions, whether both detainees used ChatGPT (the release body names one user, its opening paragraph says both), any charge, and any court finding. The accusations are allegations.
Reported harm
According to Gendarmería Nacional, an FBI alert about a user's ChatGPT consultations describing weapons and a school-shooting plan led to a court-ordered search of a home in Presidencia Roque Sáenz Peña and the detention of two adults, who remain at the disposal of the federal court; no charge or finding is reported.
Outcome
PendingFederal criminal investigation directed by the Fiscalía Federal de Presidencia Roque Sáenz Peña; search and detentions ordered by the Juzgado Federal de Garantías; both detainees held at the disposal of the federal court (Gendarmería Nacional release, 13 October 2026). No charge or court finding reported.
What remains unknown
- What ChatGPT replied to the consultations, and whether it supplied any plan
- Who detected the consultations and how they reached the FBI
- The date of the search and the detentions
- Whether both detainees used ChatGPT (the release body describes one user, its opening paragraph says both)
- Any charge or court finding; the accusations are allegations
What the evidence supports
AI involvement: reported. Gendarmería Nacional's release says the investigation began from an FBI alert concerning a user's consultations on ChatGPT, in which he claimed to have weapons, explosives and ammunition and a detailed plan for a school shooting; the search and the two detentions followed from that investigation. The person's exchanges with the chatbot are what triggered the alert (communicated_with). What ChatGPT replied, and who detected the consultations and passed them to the FBI, are not reported.
6 claims: 6 reported. What the statuses mean
Reported Gendarmería Nacional says its investigators, under the federal prosecutor of Presidencia Roque Sáenz Peña, opened a criminal investigation after an alert issued by the FBI.
Causal attribution. Official release; Infobae relays the same official information, so one origin.
- argentina.gob.ar(opens in new tab) supports · Spanish
'bajo directivas de la Fiscalía Federal de Presidencia Roque Sáenz Peña, iniciaron actuaciones de investigación criminal a raíz de una alerta emitida por el FBI'
- infobae.com(opens in new tab) supports · Spanish
'La investigación se inició a partir de una alerta de la Oficina Federal de Investigaciones (FBI) de Estados Unidos'
Reported According to Gendarmería, the alert warned of a user in Roque Sáenz Peña who, in consultations on ChatGPT, claimed to possess weapons, explosives and ammunition and a detailed plan for a mass shooting at local educational establishments.
Causal attribution. Gendarmería's description of the FBI alert; the consultations themselves and ChatGPT's replies are not published.
- argentina.gob.ar(opens in new tab) supports · Spanish
'mediante consultas en la plataforma de inteligencia artificial Chat GPT, afirmaba poseer armas, explosivos y municiones junto con un plan detallado para perpetrar un tiroteo masivo en establecimientos educativos locales'
- infobae.com(opens in new tab) supports · Spanish
'un usuario radicado en Chaco había realizado consultas en la plataforma de inteligencia artificial en las que afirmaba contar con armas, explosivos y municiones'
Reported The release's opening paragraph says the two people involved used ChatGPT to consult and obtain a specific plan for an attack on an educational centre.
Causal attribution. Official summary sentence; its body describes one user, and no source says what ChatGPT supplied.
- argentina.gob.ar(opens in new tab) supports · Spanish
'debido a que los dos involucrados utilizaban la plataforma Chat GPT para consultar y obtener un plan específico para realizar un ataque en un Centro Educativo'
Reported On a federal court order, gendarmes searched the home and seized two notebooks with handwritten notes on the logistics of the attack, bladed weapons and tools, a fuel can, a book with Nazi symbols, cash and computers.
Causal attribution. Official account of the search.
- argentina.gob.ar(opens in new tab) supports · Spanish
'Con la orden emitida por el Juzgado Federal de Garantías'; 'secuestraron dos agendas con anotaciones manuscritas que reflejan la planificación logística para la comisión del atentado'
- infobae.com(opens in new tab) supports · Spanish
'Durante el procedimiento encontraron dos agendas con anotaciones manuscritas'
Reported On the judge's order, two adults were detained and held at the disposal of the court.
Causal attribution. Official account; Perfil relays it via the NA agency.
- argentina.gob.ar(opens in new tab) supports · Spanish
'los gendarmes procedieron a la detención comunicada de dos ciudadanos mayores de edad, quienes quedaron alojados en sedes policiales a disposición de la magistratura interviniente'
- perfil.com(opens in new tab) supports · Spanish
'Gendarmería Nacional logró detener en Chaco a dos sujetos'
Reported Infobae reports, citing the official information, that the FBI detected one of the suspects using ChatGPT for queries about preparing an armed attack, and names the target as a university in Corrientes.
Causal attribution. One outlet's account drawing on the official information.
- infobae.com(opens in new tab) supports · Spanish
'La investigación comenzó después de que el FBI detectara que uno de los sospechosos utilizaba ChatGPT para realizar consultas vinculadas con la preparación de un ataque armado'; 'El blanco era la Universidad de la Cuenca del Plata'
Sources
3 sources inspected, from 1 underlying account. Sources that repeat one account do not corroborate each other.
- Gendarmería Nacional (argentina.gob.ar), 13 October 2026: two men detained in Chaco over a planned shooting(opens in new tab)
s1 · argentina.gob.ar · Official statement · Spanish · Inspected · 13 October 2026 · Shares an underlying account with another listed source · Primary
- Infobae, 13 October 2026: two young men from Chaco detained after FBI detected their ChatGPT consultations(opens in new tab)
s2 · infobae.com · News report · Spanish · Inspected · Shares an underlying account with another listed source
- Perfil, 13 October 2026: two detained in Chaco accused of planning a university shooting with AI(opens in new tab)
s3 · perfil.com · News report · Spanish · Inspected · Shares an underlying account with another listed source
How the sources were read, and where the events happened
Spanish, read in the original; the English renderings in claims and public text were made by the research agent (an AI) and were not reviewed by a human translator. Gendarmería Nacional release on argentina.gob.ar, 13 October 2026, read live (HTTP 200). Applies to s1.
Spanish, read in the original; the English renderings in claims and public text were made by the research agent (an AI) and were not reviewed by a human translator. Infobae, 13 October 2026, read live (HTTP 200); relays the official information. Applies to s2.
Spanish, read in the original; the English renderings in claims and public text were made by the research agent (an AI) and were not reviewed by a human translator. Perfil, 13 October 2026, read live (HTTP 200); relays the account via the NA agency. Applies to s3.
Event countries: Argentina. Affected-person countries: Argentina. Court countries: Argentina.
The release places the user, the search and the detentions in Presidencia Roque Sáenz Peña, Chaco, Argentina, under an Argentine federal prosecutor and court. The FBI that issued the alert is a US agency, but no event in the United States is described.
Reviewed for publication 2026-10-14: Published as a reported case on Gendarmería Nacional's own release, relayed by Infobae and Perfil: an FBI alert about a user's ChatGPT consultations describing weapons and a school-shooting plan led to a court-ordered search and the detention of two adults in Chaco. All press items rest on the one official account; the planned attack is an allegation.
People described
Two adults detained in Presidencia Roque Sáenz Peña, Chaco, Argentina, accused of planning a mass shooting; one is described as the ChatGPT user named in the FBI alert. No source read names them or gives their ages beyond adulthood.
People reported harmed in this case
2 people
1 AI participant · 1 other person harmed
Two adults detained, per the Gendarmería release ("dos ciudadanos mayores de edad"). The release body describes one user whose ChatGPT consultations the FBI alert concerned, and Infobae says one of the suspects used ChatGPT; that person is counted as a participant user. The release's opening paragraph says both used ChatGPT, but the body and the press describe one user, so the second detainee is counted as another person harmed. No one at the targeted institutions is reported harmed.
Counted once within this case. The same person may appear in other cases. This count does not establish AI causation.
Tags
Cite this case
Compiled per our published methodology: verification statuses, sourcing standards, and corrections process.
APA
NOPE. (2026). Chaco, Argentina: Gendarmería says two men were detained after an FBI alert that one of them told ChatGPT he had weapons and a plan for a school shooting. AI incidents. https://nope.net/incidents/2026-chaco-saenz-pena-fbi-alert-over-chatgpt-school-shooting-plan-two-men-detained
BibTeX
@misc{2026_chaco_saenz_pena_fbi_alert_over_chatgpt_school_shooting_plan_two_men_detained,
title = {Chaco, Argentina: Gendarmería says two men were detained after an FBI alert that one of them told ChatGPT he had weapons and a plan for a school shooting},
author = {NOPE},
year = {2026},
howpublished = {AI incidents},
url = {https://nope.net/incidents/2026-chaco-saenz-pena-fbi-alert-over-chatgpt-school-shooting-plan-two-men-detained}
} Related cases
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