Iran's President Ebrahim Raisi's funeral procession was at a Muslim Shiite Shrine in Tehran, where caskets of him and seven others were kept for the mourners to bid adieu to.

The caskets of the eight killed will then be taken on a procession through downtown Tehran to Azadi, or 'Freedom Square' where President Ebrahim Raisi gave speeches in the past.

The caskets of the dead were draped in Iranian flags with their pictures on them. On the late President Ebrahim Raisi's coffin sat a black turban signifying his direct descendance from Islam's Prophet Muhammad.

Iran's supreme leader Ayatollah Ali Khamenei oversaw the funeral on Wednesday for the country's late president, foreign minister and others killed in a helicopter crash. The crash occurred a day prior near the village of Uzi, Varzaqan County, in the province of East Azerbaijan.

Top officials from Iran's Revolutionary Guard, a paramilitary group that operates out of one of the nation's main bases, were present. Also on hand was Ismail Haniyeh of Hamas, the militant group that Iran has armed and supported during the ongoing Israel-Hamas war raging in the Gaza Strip.

Hoardings paying tribute to the President were put up all over. A delegation from the Taliban in Afghanistan, which included their Foreign Minister Amir Khan Mutaqqi, was also anticipated to attend services in Tehran, along with Prime Minister Shehbaz Sharif of Pakistan.

Following the crash, Iran's theocracy announced five days of mourning and urged everyone to participate in the open mourning sessions. Such events are usually attended in large numbers by schoolchildren and government personnel, with others participating out of curiosity, patriotism, or the desire to see historic events.

Raisi, 63, had been discussed as a possible successor for Iran's supreme leader, the 85-year-old Khamenei. His death now throws that selection into question, particularly as there is no heir-apparent cleric for the presidency ahead of planned June 28 elections.