Deepertruth: Totus Tuus Eucharistic Miracle of Buenos Aires 1996

The priest immediately went to the woman, still kneeling at the railing,
but instead of finding the Host on the cloth, he saw a small spot of
Blood. When Mass was over, the priest took the cloth into the sacristy and
placed the stained area in a basin filled with clear water. After washing
the spot and scrubbing it numerous times, he found that it had become
darker and larger (reaching about the size and shape of a Host). Moreover,
the water in the basin turned Bloody.