Funeral prayers for Iran’s Supreme Leader Ayatollah Seyyed Ali Khamenei are scheduled to be offered on Sunday in Tehran, marking the third day of extensive funeral ceremonies that have drawn massive crowds to the Iranian capital.

According to funeral organisers, the prayers will begin at 8am local time and will be led by a senior religious authority, although officials have not formally announced who will preside over the ceremony.

According to Tasnim news agency, funeral prayers for four members of Khamenei’s family will also be held on the occasion.

The prayers will take place at the Imam Khomeini Grand Musalla.

Following the prayers, funeral processions will be held in Tehran on Monday and in Qom on Tuesday.

Khamenei’s body will then be flown to the Iraqi cities of Najaf and Karbala for more funeral proceedings and returned for burial in the Iranian city of Mashhad on Thursday.

Khamenei, who led Iran from 1989 until his death at the age of 86 on February 28, was killed during a joint US and Israeli attack.

Large crowds gathered in Tehran on Saturday night amid ongoing public mourning ceremonies.

Thousands of mourners, many dressed in black and carrying red flags, participated in commemorations and chanted slogans against the United States and Israel.

The coffins of Khamenei and four family members who were killed in the February 28 strikes, including his infant granddaughter, were placed on a raised platform during the ceremonies.

Iranian authorities have projected that more than 10 million people could participate in the funeral ceremonies in Tehran, with some estimates suggesting attendance may reach 20 million.

The funeral ceremonies officially began on Friday, with foreign dignitaries and official delegations from across the region and beyond attending to pay their respects.

Speaking on Saturday, Iranian Foreign Minister Abbas Araghchi welcomed the international participation, saying Iran was pleased to receive representatives from more than 70 countries to honour its late leader.

Araghchi also acknowledged the attendance of Arab delegations, describing the ceremonies as a historic event that would remain a lasting memory in Iran’s relations with regional countries.

According to the announced schedule, funeral rites will continue in the holy city of Qom on July 7.

Ceremonies are also planned in Iraq on July 8, including in Baghdad and the holy cities of Najaf and Karbala, where religious and political figures are expected to participate.

The final funeral and burial ceremony is scheduled to take place on July 9 at the Imam Reza Shrine in the northeastern Iranian city of Mashhad.