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.

Huge crowds gathered to mourn the late Supreme Leader of Iran, Ali Khamenei, who was killed alongside family members in a US-Israeli air strike in February. During the funeral, former President Donald Trump expressed a commitment to maintaining calm amidst the tensions surrounding the event, 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.

Tehran municipal authorities are reportedly preparing for a significant number of deaths, with estimates of up to 3,000, in anticipation of Ali Khamenei's funeral. They have established a special unit to manage the deceased and missing individuals, and have also prepared thousands of new graves at the Behesht-e Zahra cemetery, according to PM News.

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.

Iran has observed the second day of funeral processions for its late Supreme Leader Ali Khamenei, with large crowds participating despite a heatwave, according to Al Jazeera.