阿古柏
The contemporaneous historian Musa Sayrami (1836–1917) stated that ruler Yaqub Beg of Yettishar was poisoned on May 30, 1877 in Korla by the former hakim (local city ruler) Niyaz Hakim Beg of Yarkand, although Niyaz Hakim Beg and other sources stated that his death was by suicide or in battle against the Qing dynasty.