Prince Karim, 88, was given the title of “His Highness” by Queen Elizabeth in July 1957, two weeks after his grandfather, the Aga Khan III, unexpectedly made him heir to the family’s 1,300-year dynasty as leader of the Ismaili Muslim sect.

Hussaini, will oversee the plans to open the million-dollar Ismaili Muslim community hub after his father's recent passing.

Prince Karim al-Hussaini Aga Khan IV, the 49th hereditary Imam of the Ismaili community, was buried on Sunday at a private ceremony in Aswan city of Egypt, according to a statement issued by

Hussaini, the Aga Khan IV and 49th Imam of Nizari Ismaili Muslims, died February 4. He was 88. The Aga Khan’s eldest son, Prince Rahim Al-Hussaini, has been designated the Aga Khan V.

According to a statement issued by the community, in 2018, Prince Karim Aga Khan IV designated the Henrique de Mendonça Palace, Lisbon, as the seat of the Ismaili Imamat, to be known as the “Diwan of the Ismaili Imamat”. The term Diwan is an Arabic, Indian, and Persian term that means the court or chief administrative office of the Imam.

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.