Juan Carlos Valle and Sergio Alejandro Alcapia Cienfuego died at 23:00 hours that day, at kilometer 12 of the Carretera General San Martín, due to multiple gunshot wounds to the cranium with projectile exit, as recorded in the Medical Death Certificate from the Instituto Médico Legal.

Juan Osvaldo Ortiz Moraga died at 06:00 hours that day, in the same location and from the same cause, as recorded in the Medical Death Certificate from the Instituto Médico Legal. He remained in the status of forcibly disappeared until 1992, when it was clarified that he had been buried as an "unidentified male" (NN masculino) in Section 29 of the Cementerio General de Santiago.

According to eyewitnesses, they were detained inside the Quinta Bella neighborhood in the Recoleta commune by Carabineros officers belonging to the Fifth Precinct of the sector, while they were conducting an operation in the area. Juan Carlos Valle was detained on the public thoroughfare in front of his house; Sergio Alcapia, while getting off a public bus; and Juan Ortiz, inside his home.

The families of Juan Carlos Valle and Sergio Alcapia were denied the detention at the police station. Days later, both families found their bodies at the Instituto Médico Legal.

Regarding the family of Juan Ortiz, a surviving witness told them a week after the detention that on that same day, Carabineros had transported them, along with others, to a vacant lot, where they shot them. According to the witness, he was released and his life was spared because he had small children. From that date on, Juan Ortiz's family remained unaware of his whereabouts.

In 1991, in an investigation substantiated in the Third Criminal Court of Santiago regarding several forcibly disappeared persons, it was proven that Autopsy Protocol No. 3446, attributed to an "unidentified male," belonged to Juan Ortiz; and that his remains had been buried under that status in Section 29 of the Cementerio General.

Up to the moment the Superior Council reviewed this case, his remains had not been located, and for that reason, his death has not been able to be registered in his name.

Considering the evidence gathered and the investigation carried out by this Corporation, and with their detentions verified, the Superior Council reached the conviction that Sergio Alejandro Alcapia Cienfuego, Juan Osvaldo Ortíz Moraga, and Juan Carlos Valle Cortés were executed outside of any legal process by State agents, who, with the purpose of concealing their actions, subsequently abandoned their bodies without identification on the public thoroughfare.

For this reason, it declared them victims of human rights violations.