Luis Humberto Andrade Balcazar passed away that day at 0:20 hours, at the Regional Hospital of Concepción, due to cardiorespiratory arrest, as certified by the Death Certificate.

According to statements from family members and witnesses, on September 11, 1973, Luis Andrade was serving as the Medical Director of the «El Pino» Sanatorium Hospital and as a Councilman for the Partido Socialista in San Bernardo.

He was detained in the second half of that month and transferred to the military facility of the Infantry School Regiment of San Bernardo, at Cerro Chena, accused of participating in "Plan Z" and of keeping weapons in his home.

There, according to witness statements, he was subjected to electric shocks while being interrogated. Along with other detainees, he witnessed the execution by firing squad of ten workers from the Maestranza de San Bernardo. Subsequently, he was taken to the Estadio Nacional, where his family found him in very poor physical and psychological condition.

Despite his deplorable state—he had lost more than 30 kilos—he was transferred to the Chacabuco Prisoner Camp on the ship «Andalién», along with a hundred other prisoners. During the months he was held at that facility, he was seen to be sorrowful and depressed, to the point of not interacting with the rest of the detainees.

On April 25, 1974, he was released because it had not been proven that he had contravened the constitutional norms of the country, according to a certificate issued by the Executive Secretary of the National Secretariat of Detainees (SENDET).

After his release, he was unable to recover. He moved to live in Concepción, the city where he passed away.

The information gathered and the investigations conducted allowed the Superior Council of this Corporation to reach the conviction that the torture and mistreatment to which he was subjected by State agents during his detention decisively influenced the death of Luis Humberto Andrade Balcazar. Consequently, it declared him a victim of human rights violations.