The main figure yet to be seen during the funeral proceedings is Mojtaba Khamenei, Iran’s third supreme leader and the son of Ali Khamenei.

According to reports in Iranian media, he was injured in the same strike that killed his father on the first day of the war, when the US and Israel attacked Iran on 28 February.

Israel had vowed - both before and after his appointment - that he would be a target.

His absence could therefore be due to security concerns, although Iranian officials have yet to provide an explanation.

So far, the only word from Mojtaba Khamenei since his succession in early March has been in the form of written statements published in Iranian media, and he has yet to appear in public.

His latest statement was reportedly issued yesterday, in which he reappointed Iran’s judiciary chief for another term.

However, these funeral proceedings have not only been about his father. Other members of the Khamenei family were killed during the war, including Mojtaba's wife, Zahra Haddad-Adel. He was absent from that ceremony as well.

There are delegations from many countries around the world, including representatives of Iran’s regional allies and proxy groups - however there are also some prominent Iranian figures who have yet to be seen during these proceedings, including some of the country’s former presidents.

It remains to be seen whether the supreme leader is seen later today - or during his father's burial, which is due to take place in a few days in his birthplace of Mashhad.

-BBC