Ulugh Beg and his son Abdal-Latif Mirza marched towards Herat in the spring of 1448 in order to take Khurasan from his nephew, Ala-ud-Daulah Mirza, who had escaped to Quchan after the defeat at the Battle of Tarnab. They easily took the city except the Qila Ikhtiyar-al-Din and fort Neretu both of which offered stiff resistance. At this point only the advance troops had reached Herat, which was unable to take the citadel or the Fort Neretu.