Iran has indefinitely postponed the memorial ceremony for its Supreme Leader Ayatollah Ali Khamenei, who was killed in a joint attack by Israel and the United States, according to the Mehr news agency. The three-day event was originally scheduled to begin Wednesday night at Tehran’s Grand Mosalla prayer ground.

Mehr reported that the decision to postpone came in response to public requests, as many people from different provinces wanted to attend the funeral but found it difficult due to ongoing attacks. The Revolutionary Guard stated that preparations are underway to hold the late leader’s funeral in the city of Mashhad, though no specific date has been announced yet.

The postponement reflects the logistical and security challenges Iran faces amid continued hostilities following the attack that killed its top leader.