Bayinnaung invaded Vientiane in 1574, Sen Soulintha ordered the city to be evacuated but he lacked the support of the people and the army. Vientiane fell to the Burmese. Sen Soulintha was sent as a captive to Burma along with Setthathirath's heir Prince Nokeo Koumane. A Burmese vassal, Chao Tha Heua, was left to administer Vientiane, but he would rule only four years. The First Taungoo Empire (1510–99) was established but faced internal rebellions. In 1580 Sen Soulintha returned as a Burmese vassal, and in 1581 Bayinnaung died with his son King Nanda Bayin in control of the Toungoo Empire. From 1583 to 1591 a civil war took place in Lan Xang.