Jane Vanini, a militant of the Movimiento de Izquierda Revolucionaria (MIR), died that day in the Lorenzo Arenas neighborhood of Concepción, after her home was raided by members of the Armada. Her death is not registered, and her remains have not been located.

Jane Vanini had entered Chile in 1971 as a political exile from the military regime established in her home country and was living with a journalist and leader of the MIR. Both had chosen to go underground due to the political persecution deployed against militants of that political organization and were living in Concepción.

According to witness statements, on December 5, 1974, her partner was detained in that city by members of the Armada and taken to the Base Naval de Talcahuano; on September 6, the apartment the couple occupied was surrounded by members of that institution, and Jane Vanini was ordered by the uniformed officers to surrender, which she resisted.

A shootout occurred at the scene, in which she was killed. The members of the Armada subsequently took her body to an unknown destination.

The official version of the events was published at the time in the newspaper El Sur of Concepción. It stated that an armed confrontation had taken place at the location and that her body was subsequently found with a bullet wound to the skull, with characteristics of suicide.

As of the date the Superior Council reviewed this case, her whereabouts had not been determined, nor had the versions regarding the circumstances of her death been clarified.

Considering the evidence gathered and the investigations carried out by this Corporation, the Superior Council reached the conviction that Jane Vanini was a victim of political violence.