King Oyo Nyimba Kabamba Iguru Rukidi IV of Uganda’s Tooro Kingdom died on the evening of August 27 at age 34, the Tooro Kingdom announced. [1, 2, 3, 4] The kingdom’s Prime Minister, Calvin Armstrong Rwomiire Akiiki, said the monarch passed around 10:00 p.m. local time and called on his people to remain united and prayerful during this difficult period. [1, 4]

Oyo was crowned king in September 1995 when he was just 3 years old, becoming the world’s youngest reigning monarch. He succeeded his father, King Patrick David Matthew Kaboyo Olimi III. [1, 2, 3, 4] A regency including the queen mother and Uganda’s President Yoweri Museveni administered the kingdom until Oyo reached adulthood at age 18. [1, 4]

The Tooro Kingdom is home to more than two million people, roughly 3% of Uganda’s 45 million population, though sources differ on which figure is most accurate. [1, 4] Despite Uganda being a republic led by an elected president, the Tooro Kingdom remains a cultural institution without political power. [1, 2, 3, 4]

King Oyo was unmarried but left behind a prince heir, whose identity will be revealed according to Tooro traditions. [1, 2, 3] Reports indicate the king was critically ill and had been receiving treatment in the United States, with some sources citing cancer as the illness, though the kingdom has not officially disclosed the cause of death. [1, 4]

During his reign, King Oyo championed causes such as youth empowerment, education, climate conservation, and HIV/AIDS awareness. [1] His death triggered condolences from across Uganda, including from Bobi Wine, a prominent opposition leader, who described the news as "most devastating." [3] The Buganda Kingdom, Uganda's largest traditional institution, also mourned his passing. [1, 2, 3]

Prime Minister Calvin Armstrong Rwomiire Akiiki announced the passing with profound sadness and urged calm among the people of Tooro. [2] He said, "May His Majesty the King rest in eternal peace." [1]

The Tooro Kingdom now prepares to reveal the identity of the heir according to their customs, beginning the next chapter in leadership for the kingdom.