In 1272 Sultan Ghiyasuddin Balban appointed Amin Khan as the governor and Tughan Khan as the sub-governor of Bengal with the duty to reconquer and pacify the Province, most of which had been under the control of the Eastern Ganga dynasty since the death of Malik Ikhtiyaruddin Iuzbak in 1257 CE. However Tughan Khan deposed Amin Khan with the help of his old loyalists and declared himself Sultan of Bengal. He took the name Mughisuddin Tughral.