In early 1568, the captive king successfully convinced Bayinnaung to allow him to go back to Ayutthaya on pilgrimage. Upon his arrival, in May 1568, he disrobed and revolted. He also entered into an alliance with King Setthathirath of Lan Xang. He was not able to convince Maha Thammarachathirat of Phitsanulok to join him and his son in the revolt. Thammarachathirat remained loyal to Bayinnaung and survived the siege by Ayutthaya and Lan Xang forces until October when the relief forces from Pegu arrived. The invasion armies laid the Third Siege of Ayutthaya in December 1568. According to Wyatt, Maha Chakkraphat died one month into the siege in January 1569. According to Prince Damrong, he died sometime during the siege. The Burmese chronicles say that the king died on 15 April 1569.