Bruno Olivarez Pérez died that day at 21:40 hours, due to cerebral contusion from a penetrating gunshot wound to the left occipital region, as certified by his Death Certificate. The Autopsy Protocol further adds that "the injuries are of a homicidal nature."

He passed away at the Regional Hospital of Temuco, and the death registration was carried out by resolution of the Cautín Military Prosecutor's Office, issued in case 94-P.

A copy of his Autopsy Protocol, No. 67/74 dated June 3, 1974, is attached to an investigation initiated in the Second Criminal Court of Temuco, following a complaint filed by the National Commission for Truth and Reconciliation regarding the disappearance of five people.

The investigation records that, on that date, the Legal Medical Institute sent the original Protocol to the aforementioned Military Prosecutor's Office.

When consulted, the Fourth Military Court of Valdivia reported that it had no record of the requested information, stating that "these were events that occurred during a state of emergency, the cognizance of which fell under the jurisdiction of War Tribunals."

The Superior Council, considering the time and cause of death, and especially the notation in the Protocol indicating that the death of Bruno Olivares Pérez had the characteristics of a homicide and the circumstances under which a Military Tribunal ordered his burial, reached the conviction that he was executed outside of any legal process by State agents.

For this reason, it declared him a victim of human rights violations.