Canadian Prime Minister Justin Trudeau and Spain’s King Emeritus Juan Carlos were among the dignitaries who attended Saturday’s private ceremony for His Highness Prince Karim Al-Hussaini at the Ismaili community center. Portugal’s President Marcelo Rebelo de Sousa and the mayor of Lisbon were also among the mourners.

The Aga Khan IV, the spiritual leader of the world’s Shi’ite Ismaili Muslims, has died at the age of 88. The wealthy imam, who promoted a moderate form of Islam, has also been known for his multimillion-dollar development projects that have benefited communities throughout Asia and Africa.

The Aga Khan IV has been laid to rest in Egypt in a private ceremony. The governor of Aswan welcomed Prince Karim’s family at the southern Egyptian’s provinces airport ahead of the burial service on Sunday.

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.