A procession carrying the remains of Iran's late supreme leader, Ayatollah Ali Khamenei, has been attended by millions of people in the Iranian capital, Tehran.

Khamenei and several members of his family, whose coffins are at the focus of the procession, were killed in an airstrike at the very outset of the war launched on the Islamic Republic by the US and Israel on February 28.

The massive turnout was encouraged by Iran's regime to give a show of what it says is the country's continued strength and unity as it holds negotiations on a permanent end to the war.Calls to avenge Khamenei's death

Iranian state television showed images taken by helicopter of a crowd stretching from Tehran's Azadi (Freedom) Square for kilometers (miles) down the street bearing the same name.

The coffin of Khamenei, who was 86 at the time of his death, and those of his relatives killed in the air strike were carried on board a truck adorned with the kind of ornamental grating used around the shrine of an imam.A truck is carrying coffins of Ali Khamenei and four other family members killed along with himImage: Majid Asgaripour/WANA/REUTERS