With his rule north of the Alps secured and with the birth of his heir, Otto II shifted his focus to Italy. The situation south of the Alps was chaotic. Pope Benedict VI, who had been appointed by Otto I, had been imprisoned by the Romans in Castel Sant'Angelo. When Otto II sent an imperial representative, Count Sicco, to secure his release, Crescentius I and Cardinal Franco Ferrucci had Benedict VI murdered while still in prison in 974. Cardinal Franco Ferrucci then crowned himself as Benedict VI's successor, becoming Antipope Boniface VII. A popular revolt, however, forced Boniface VII to flee to Constantinople, taking a vast treasure with him. In October 974, under the direction of Count Sicco, the bishop of Sutri was elected Pope as Pope Benedict VII. Boniface VII was then summarily excommunicated for his unsuccessful attempt to take the papacy.