Juan Segundo Espinoza Valenzuela died that day at 21:00 hours, at the Regional Hospital, due to cachexia and pulmonary tuberculosis, according to the Medical Death Certificate.

According to statements from family members and witnesses, Juan Espinoza, a militant of the Movimiento de Izquierda Revolucionaria (MIR), was arrested on August 30, 1973, along with 25 other agricultural workers at the "Nehuente" estate, in the commune of Carahue, in Temuco, during a military operation by the Tucapel Regiment.

On that occasion, witnesses observed the interrogations under torture and illegitimate duress to which he was subjected; he was accused of being part of a guerrilla training school in the area.

On September 11, he was placed at the disposal of the Military Prosecutor's Office of Cautín-Temuco and transferred incommunicado to the city's penitentiary, where he remained incommunicado for another four days.

Due to his deteriorated physical condition, at the end of September he had to be transferred to the prison infirmary; however, his situation worsened, which is why he was rushed to the Regional Hospital, the medical facility where he died hours later.

The family members were never officially notified of Juan Espinoza's death. His body was not returned to them either, and as of the date the Superior Council reviewed this case, despite having established that he was buried in Patio No. 27 of the General Cemetery of Temuco, it has not been possible to locate the exact place where he is interred.

Considering the evidence gathered and the investigation conducted, the Superior Council of this Corporation reached the conviction that the mistreatment and beatings to which he was subjected by State agents during his detention had a decisive influence on the death of Juan Segundo Espinoza Valenzuela. Consequently, it declared him a victim of human rights violations.