Guillermo Pinto Viel died that day at 3:35 hours, at the Hospital Kennedy in Valdivia, due to hydroelectrolytic imbalance, acute diarrhea, ulcerative colitis, and liver cirrhosis, according to his death certificate.

According to witness statements, Guillermo Pinto was detained for his collaboration with the Partido Socialista in the area and transferred to the Cárcel Pública de Isla Teja, in Valdivia. At this location, he was locked in a dungeon with deficient sanitary and nutritional conditions, without regard for his advanced age and precarious physical state.

During his imprisonment, he was continuously subjected to interrogations, especially for defending the rights of the political prisoners who were held in said facility.

After two months, he became seriously ill and had to be transferred to the Hospital Kennedy in Valdivia, where he passed away.

Considering the evidence gathered and the investigation carried out by this Corporation, the Superior Council reached the conviction that the mistreatment he was subjected to by State agents during his illegitimate and arbitrary deprivation of liberty in a precarious and inhospitable facility decisively influenced the death of Guillermo Pinto Viel.

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