Sir Omar died in 1986, and on October 5, 1992, the sultan, who also acted as prime minister and as the minister of defense and of finance, celebrated the 25th year of his reign. He continued to rule under a state of emergency declared by his father in 1962. In the 1980s and 1990s the sultan regularly appeared at or near the top of lists of the world’s richest individuals, his fortune deriving from Brunei’s oil and gas.