year later, due to the threat that Samanids posed. Makan then returned to Tabaristan, where he was defeated by the Ziyarid ruler Mardavij, who managed to conquer the region. In 935, Nasr II re-established Samanid control in Gurgan and made Mardavij's successor Vushmgir his vassal. However, in 939 he declared independence, but was defeated the following year at Iskhabad. In 943 several Samanid army officers, angry at Nasr's support of Isma'ili missionaries, formed a conspiracy to murder him. Nasr's son Nuh I, however, learned of the conspiracy. He went to a banquet designed to organize the plot and had the head of their leader cut off. To appease the other officers, he promised to stop the Isma'ili missionaries from continuing their activities. He then convinced his father to abdicate, who died of tuberculosis after a few months. Right when Nuh I ascended the throne, a revolt erupted in Khwarazm, which he managed to suppress. Later in 945, he had to deal with the Muhtajid ruler Abu 'Ali Chaghani, who refused to relinquish his post as governor of Khorasan to Ibrahim ibn Simjur. Abu 'Ali Chaghani then rebelled, and was joined by several prominent figures such as Abu Mansur Muhammad, whom he appointed as his commander-in-chief. In 947, he installed Nuh's uncle Ibrahim ibn Ahmad as amir in Bukhara. Abu 'Ali Chaghani then returned to his domains in Chaghaniyan. Ibrahim, however, was unpopular with the people of Bukhara, and Nuh soon retaliated by retaking the city and blinding Ibrahim and two brothers. When Abu Ali Chaghani received the news of the re-capture of Bukhara, he once again marched towards it, but was defeated by an army sent by Nuh and withdrew back to Chaghaniyan. After some time, he left the region and tried to obtain support from other Samanid vassals. Meanwhile, Nuh had Chaghaniyan ravaged and its capital sacked. Another battle shortly ensued between Abu 'Ali Chaghani and a Samanid army in Tukharistan, which resulted in a Samanid victory. Fortunately for Abu Ali Chaghani, he managed to secure the support of other Samanid vassals, such as the rulers of Khuttal, and the Kumiji mountain people, but in the end made peace with Nuh, who allowed him to keep Chaghaniyan in return for sending his son Abu'l Muzaffar Abdallah as hostage to Bukhara. Alp Tigin, nominal vassal of the Samanids, conquered Ghazna in 962 from the Lawik dynasty. The fifth of these