While campaigning against Venetian forces, Skanderbeg managed to inflict a serious defeat on 23 July 1448, seriously weakening Venetian power in Albania.[21] The siege of Svetigrad continued, however, and Marin Barleti writes that the Ottomans bribed a soldier to throw a dead dog into the well of the fortress, forcing the garrison to refuse to drink out of it. It is more likely, however, that the Ottomans had cut off the water supply and induced the garrison to surrender.[22] Given the circumstance, Perlati promised a surrender if the garrison were allowed a safe passage through the Ottoman lines.