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.

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.

At the age of 20, Prince Karim Al-Hussaini inherited the reins of a Shia Muslim lineage and used his entrepreneurship to become one of the world’s richest hereditary rulers.