Oyo Nyimba Kabamba Iguru Rukidi IV, the world's youngest king and traditional monarch of Tooro in western Uganda, has died at the age of 34. His death was announced on Friday by Prime Minister Calvin Rwomiire Akiiki.

A Ugandan government minister indicated to local media that the king had been critically ill and sought treatment in the United States. The specific cause of death has not been revealed.

Tooro is one of Uganda's ancient kingdoms, which were restored in 1993 after being banned following independence from British colonial rule. While these monarchs hold no political authority and are legally barred from engaging in politics, they possess significant cultural influence.

Oyo became king in 1995 following the death of his father, and was listed in Guinness World Records as the world's youngest reigning monarch. He led his people through regents until he came of age at 18. The kingdom, founded in 1830, is home to over two million people.

In a statement, Prime Minister Akiiki confirmed that an heir to the throne exists, although the king was not officially married. "The continuity of the Crown is assured," the prime minister stated. "His Majesty leaves behind a Prince as his heir, whose identity will be formally revealed at the appropriate time, in accordance with the traditions and customs of Tooro Kingdom."

King Oyo was known for promoting youth empowerment, education, climate issues, and HIV/Aids awareness. Government minister Margaret Muhanga announced that a million trees would be planted in his honor.

During his youth, Oyo was the subject of adoration from his subjects. As an adult, he was described as a private and quiet individual, widely regarded as Uganda's most eligible bachelor. He was also noted for his friendships, including a notable relationship with Libyan leader Colonel Muammar Gaddafi, who supported the Tooro Royal Family for years.

The seat of Oyo's kingdom is a remote city in western Uganda near the Congo border. His people are known as the Batooro.