 Aufi also mentions that Ahmad Jamaji, who was Iltutmish's governor of Bahraich, defected to Qabacha in 1220.The Khwarazm kings, who had taken over the western part of the former Ghurid Empire, suffered a Mongol invasion in 1220.After being defeated at the Battle of Indus in 1221, the Khwarezmian prince Jalal ad-Din Mingburnu escaped to the Punjab region.