Rahim Al-Hussaini has been named the new Aga Khan, spiritual leader of the world's millions of Ismaili Muslims.

LISBON, Portugal — The Aga Khan, who became the spiritual leader of the world’s millions of Ismaili Muslims at age 20 as a Harvard undergraduate and poured a material empire built on billions of dollars in tithes into building homes, hospitals and schools in developing countries, has died. He was 88.

His Highness Prince Karim Aga Khan IV, the 49th hereditary imam of the Shia Ismaili Muslims and a global philanthropist, passed away on Tuesday