Manuel Alberto Yañez Yañez died that day at 0:45 hours, at the Legal Medical Institute of Valparaíso, due to a precordial gunshot wound, as recorded in his Death Certificate.

According to his mother's statement, the young man, who was part of the staff of the Naval Engineering School, was struck by a projectile fired by unknown individuals traveling in a pickup truck while he was on guard duty at Parque Italia in Valparaíso.

The General Directorate of Personnel of the Chilean Navy informed this Corporation that Yáñez Yáñez died in an accident that occurred in the line of duty.

Considering the evidence gathered and the investigation conducted by this Corporation, and taking into account the time period and the cause of death, the Superior Council declared Manuel Alberto Yáñez Yáñez a victim of the prevailing political violence.