Min Swe, then governor of Launggyet, revolted, and came back with a force supplied by the Shan state of Kale (Kalay) in November 1458.
However, Mrauk-U forces easily defeated the attack, clearing the way for Ba Saw Phyu as the undisputed heir apparent.
In the first year of his reign, he took advantage of the turmoil at Sultan Rukunuddin Barbak Shah's court, and seized Chittagong.
[4][5] (Note that the Arakanese chronicles claim that the conquest of Chittagong came nine years earlier in 1450 by King Khayi.
[8] He also established religious contacts with Ceylon, which presented him the Tripiṭaka, Theravada Buddhism's sacred texts.
[7] Though "highly praised by his countrymen" for his enlightened rule, the king was assassinated by a servant of his eldest son Dawlya on 5 August 1482.
Dawlya had been unhappy about the king's recent decision to anoint his younger half-brother Gamani as the heir apparent.