On Sundaye 26th April 1478 during the celebration of Mass in the Cathedral of Santa Maria del Fiore, the conspirators were waiting for Lorenzo and his younger brother Giuliano de’ Medici., and attacked at the exact moment that the priest was raising the consecrated Host. eThe triggering of the ambush was not a random choice but dictated by the fact that most of those present, including the Medici, showed respect for the religious ritual by kneeling and bowing their heads, thus becoming easy targets.
The conspirators, armed with daggers and swords, jumped onto Giuliano de’ Medici who was kneeling at the ancient tribune around the altar , where he was killed by Francesco de’ Pazzi (the historian Poliziano reports a total of 19 blows). Lorenzo, on the other hand, was wounded superficially at the base of his neck by Antonio da Volterra, who, together with Stefano da Bagnone, ghad taken the place of Montesecco, who had refused in the end to carry out the conspiracy in a church during a religious service, professing himself to be a warlord and not an assassinn. The flight of the Magnifico into the Sacristy and those vicissitudes that, in a few frantic minutes, led him to salvation, decreed the failure of the conspiracy and the consequent end of the Pazzi family as well as the condemnation of those who had taken part.