 Instead, the Timurids went around Sistan destroying agricultural fields and dams, which caused famine in the province.Shah Rukh then departed for Herat, leaving behind some of his forces and appointing a rival Mihrabanid, Shah Sultan ibn Shah Khusraw ibn Shah Arslan as governor of Sistan.Qutb al-Din, however, was determined to maintain his rule over Sistan, and was able to kill Shah Sultan while the latter was still en route to take over the province.