Juan Ramón Bustos Marchant died that day at 12:30 hours, in Valparaíso, from a gunshot wound to the head with cranial-encephalic perforation and projectile exit, as recorded in his Death Certificate.

According to information provided by his family, Juan Bustos was the Chief Prefect of the Investigations Police in Valparaíso until September 11, 1973, the date on which he was dismissed from his post, although he remained in the institution.

On October 11, 1973, he was arrested at his home by members of the Navy and taken blindfolded to an unknown location, where he was interrogated under torture regarding his connection to the former Director of the Investigations Police, Eduardo Paredes, and an alleged arms trafficking scheme. He was later abandoned on a vacant lot.

At the end of 1973, he was transferred to perform duties at a Prefecture in Santiago. While on duty, in April 1974, he was arrested again, this time by order of the Naval Prosecutor's Office of Valparaíso, in an investigation into illegal arms trafficking.

He was transferred to Valparaíso and held at the Investigations Prefecture barracks, where he was interrogated by officials who had been his hierarchical subordinates while he held the position of Prefect in that city.

On May 2, 1974, around 7:30 hours, while he was being held at the aforementioned location, he shot himself in the head with a weapon of his own that appeared at the scene. Transferred to an emergency center, he passed away five hours later.

A couple of weeks after his death, his spouse was notified at the Naval Prosecutor's Office that her husband had no connection to the arms trafficking case for which he had been detained.

When consulted, the Investigations Police informed this Corporation that, through internal inquiries conducted within that Service, it was determined that Juan Bustos had been the subject of false accusations that affected him deeply, causing him to suffer from severe depression.

Considering the background information gathered by this Corporation, the Superior Council reached the conviction that the decision to take his own life adopted by Juan Ramón Bustos Marchant was a consequence of the torture and abuse to which he was subjected by State agents while he was deprived of his liberty, accused of crimes he had never committed.

By virtue of this, he was declared a victim of human rights violations.