Ioannes happened to be at Philippopolis when he heard of the Hungarian invasion, and decided to drive them out. He marched to the Danube the next year with Italian and Turkish troops, and crossed it on ships sent via the Black Sea, confusing the defenders by dividing his forces. With his cavalry he scattered the assembled Hungarians, many of whom were killed when a bridge collapsed. He also took many prisoners, including Akus and Keledi