Iran is due to bury ayatollah Ali Khamenei on Thursday, more than four months after the supreme leader was killed in an Israeli airstrike, with the funeral taking place at the Imam Reza shrine in his home city of Mashhad.
The burial at Iran's holiest Shiite shrine will be held behind closed doors.
Public mourning ceremonies began on Saturday in the capital, Tehran, where millions of supporters paid tribute to the former political and spiritual leader, who had ruled the Islamic Republic with an iron grip for 36 years. The ceremonies later moved to Iran's holy city of Qom before continuing in neighbouring Iraq on Wednesday.
Attention has turned to whether his son and successor, Mojtaba Khamenei, will make his first public appearance since the start of the Iran war as the funeral procession reaches its final stop in Mashhad.
Mojtaba Khamenei has not been seen in public since being named supreme leader in March, fuelling speculation about his health. US Defense Secretary Pete Hegseth has claimed that he is "wounded and likely disfigured."
Ali Khamenei was killed on February 28 in an Israeli airstrike on his official residence in Tehran.
His death was followed by more than five weeks of war between Iran on one side and the United States and Israel on the other, before a ceasefire was agreed in early April.
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