Millions of people are expected to attend the funeral procession for Iran's slain supreme leader, Ali Khamenei, in Tehran today, according to Al Jazeera.

Large crowds have gathered in Tehran for the first day of Ayatollah Ali Khamenei's funeral. His body will lie in state at the Grand Mosalla until Monday, after which it will be transported across Iran and Iraq.

Iranian authorities anticipate that millions will participate in the funeral commemorations for former supreme leader Ayatollah Ali Khamenei, according to BBC World. The event is expected to draw significant public attention and mourning across the country.

Ayatollah Mojtaba Khamenei, Iran's new Supreme Leader, was absent during the second day of state funeral ceremonies for his late father, Ayatollah Ali Khamenei, in Tehran. This absence has led to ongoing speculation regarding his whereabouts and health. The funeral events saw large crowds participating in mass prayers, attended by three of Ali Khamenei's sons, Masoud, Meysam, and others.

Authorities in Iran and Iraq anticipate that up to 20 million people will participate in the funeral ceremonies for the former supreme leader of Iran over the coming days. This event is described as an 'intensely political moment' by sources, reflecting the significant impact of the leader's legacy on the region.

Massive crowds gathered in Tehran to mourn the death of Iran's leader Ali Khamenei, with attendees chanting calls for revenge against the US and Israel. Notably, Khamenei's son Mojtaba was absent from the funeral, while other family members were present, according to Al Jazeera.