He was arrested after telling ChatGPT he wanted to kill his son. Can conversations with AI be used as criminal evidence in Brazil?
Ele contou ao ChatGPT que queria matar o filho e foi preso — conversas com IA podem ser prova de crime no Brasil?
A 36-year-old farmer in Espírito Santo, Brazil, expressed intentions to kill his 8-year-old son and commit suicide in conversations with ChatGPT over about two months. OpenAI's safety system reported the conversations to the FBI, which forwarded them to Brazilian authorities. He was preventively arrested on June 19 and released on August 13 after 54 days in detention because the investigation exceeded its time limit. Police said they only received the questions posed by the suspect, not ChatGPT's replies, and legal experts believe this affects the completeness and evidentiary weight of the conversations as evidence. The case has also sparked discussion about whether AI conversations can be used as criminal evidence.
The case presents the complete chain in which an OpenAI safety alert was forwarded by the FBI to Brazilian police and led to the arrest, as well as the controversy over AI conversations as criminal evidence.