Joselín del Tránsito Sáez San Martín died that day at 6:00 hours, at the Bulnes bridge over the Mapocho River, due to multiple gunshot wounds, as certified by the Medical Death Certificate from the Legal Medical Institute.

According to statements from his mother and his partner, on September 11, 1973, Joselín Sáez left his home located in the Lo Hermida neighborhood, Peñalolén commune, heading to his work in the Las Condes commune, and did not return home. His body was found days later at the Bulnes bridge, and his name appeared on the lists of the Legal Medical Institute on September 26.

Considering the gathered background information and the investigation carried out by this Corporation, the Superior Council, despite not having established the precise circumstances of his death, and taking into account the time period and cause of death, declared Joselín del Tránsito Sáez San Martín a victim of the prevailing political violence.