[1] In 1470, King Thihathura of Ava assigned Gen. Sithu Kyawhtin to put down a rebellion by Toungoo, which had also called in help from Hanthawaddy Pegu.
The princes carried the rebellious governor of Toungoo off to Ava, and left Sithu Kyawhtin as the head of the troublesome province.
In 1476, Sithu Kyawhtin enlarged the city of Toungoo, raising suspicions of some ministers at Ava.
[4] In 1480, Thihathura died, and the Ava throne was succeeded by his elder son Minkhaung II.
Minkhaung II ordered Sithu Kyawhtin to attack Yamethin, one of the rebellious towns.