Pietro was called to Russia by Tsar Ivan III, along with several other architects, in order to renovate the Kremlin. There, he sent regular reports back to his Brothers in Italy, but his reports abruptly went silent. Pietro was killed in May of 1493 by the Tsar's men, though the Tsar blamed another Assassin by the name of "Aristotele." The Assassins only found out about this ten years later, when Ezio Auditore da Firenze sent recruits to investigate Pietro's death.