Buenos Aires, 1992-1994-1996

Between 1992 and 1996, three separate Eucharistic events were reported in parishes in Buenos Aires, Argentina. The most widely discussed occurred in 1996, when a consecrated host was found on the floor of a church. Following Church protocol, it was placed in water to dissolve. Instead, witnesses reported that the host gradually transformed into what appeared to be a fragment of bloody flesh.

The investigation took place under the authority of then-Archbishop Jorge Mario Bergoglio, who would later become Pope Francis. Samples were sent for scientific examination. Among the experts involved was Dr. Frederick Zugibe, a cardiologist and forensic pathologist, who reportedly identified the tissue as human heart muscle from the left ventricle. Researchers also documented the presence of white blood cells, which are typically associated with living tissue.

The Church has not issued a formal decree declaring the events supernatural. The case is included in the International Eucharistic Miracles of the World exhibition compiled by Blessed Carlo Acutis. Skeptics note that alternative explanations, including contamination and biological growth, cannot be entirely ruled out without independent replication and unrestricted access to samples.

The events continue to invite reflection on the mystery of the Eucharist and the intersection of faith and scientific inquiry.