 The Mongols did not know about the dethronement until June–July 1298.In 1300, the Myinsaing forces led by Athinkhaya attacked the Mongol garrisons north of Mandalay named Nga Singu and Male.On 22 June 1300, the Mongol Emperor declared that Kumara Kassapa was the rightful king of Burma, and sent in an army from Yunnan.