In October 1005, Long Ngân was defeated and quickly fled to Thạch Hà area, but he was captured and killed by locals.
But after just three days, he was killed by an assassin sent by his brother Lê Long Đĩnh, another rival prince.
As a result, Lê Long Đĩnh was the surviving and undisputed claimant to the royal throne.
Đại Việt sử ký toàn thư[1] The emperor was killed by his younger brother Long Đĩnh in mysterious circumstances after reigning only 3 days.
All the courtiers ran away except for Lý Công Uẩn, who wept and embraced the body of the emperor.