LISBON, Portugal (AP) — Rahim Al-Hussaini was named Wednesday as the new Aga Khan, spiritual leader of the world’s millions of Ismaili Muslims, following the death of his father. The Aga Khan is considered by his followers to be a direct descendant of the Prophet Muhammad and is treated as a head of state.

Prince Rahim Al-Hussaini has been named the new Aga Khan, spiritual leader of millions of Shia Ismaili Muslims around the world. He will take on the role from his father Prince Karim Aga Khan, who died on Tuesday at the age of 88.

Prince Rahim Aga Khan V has been named the 50th hereditary Imam of the Shia Ismaili Muslims, succeeding his late father, Prince Karim Aga Khan IV. In keeping with the historical tradition, he now assumes leadership of the estimated 15 million Shia Imami Ismaili Muslims worldwide following the passing of his father on Tuesday,