Chao Noi is accordingly summoned to Hue to explain himself but sends his eldest son, Po.

Minh Mang, angered by this flagrant disregard of a direct order, takes no action, awaiting news of the fate of Chao Anou, who is the nominal suzerain and ordinarily would have dealt with the Phuan on behalf of Hue.

Once word is received that Chao Anou has died, Minh Mang sends a Vietnamese detachment to Muang Phuan and arrests Chao Noi and most of his family.

In May 1829, the prisoners are taken to Annam, where Chao Noi and his cousin are executed in January 1830.

Chao Noi's young sons and their mothers are kept in exile in Nghe An.

The Muang Phuan succession thus falls to Chao Xan.

Minh Mang, however, posts a quanphu (commissioner), supported by a garrison of five hundred soldiers who are rotated seasonally, to reside permanently at Chiang Kham (Khang Khay), at the headwaters of the Nam Ngum, as a precaution against a recurrence of conflict with the Siamese king.