Colonel Geraldo Neto is under investigation for the suspected murder of his wife, soldier Gisele Alves Santana, who was shot in the head. He was arrested on September 18 in São José dos Campos and has been charged with feminicide and procedural fraud following a court determination. On September 19, while undergoing a custody hearing via video call, he reiterated his defense claim that his wife committed suicide.

While in custody at the Military Prison Romão Gomes in São Paulo's North Zone, he reportedly fainted and was subsequently transported to the Military Police Hospital for medical assistance. The details regarding the colonel's health status were not disclosed by the Secretary of Public Security. Moreover, he has been instructed to return for further evaluations the following day after receiving treatment.

This case has drawn significant media attention due to the serious nature of the allegations, and it highlights ongoing issues regarding femicide in Brazil. As investigations continue, the implications of military jurisdiction versus civil law in such a case are also being examined, especially given the rank of the accused and the sensitive nature of the crime against a woman.