High-ranking governmental and military officials attended the big ceremony on Saturday morning.
The participants held up photos of the victims while chanting anti-American, anti-Israel, anti-Saudi, and anti-British slogans in reference to the countries' support for the Daesh (ISIL or ISIS) terrorist group.
Additionally, they requested that those responsible for the heinous act of terrorism be brought to justice as quickly as possible.
After the funeral procession, the coffins will be flown to Mashhad, in the northeast, which is home to the holy shrine of the eighth Shiite Imam, Ali ibn Musa al-Reza, where mourners will say their final goodbyes to the martyrs.
After Friday prayers yesterday, Iranians from all walks of life took to the streets across the country, including the capital Tehran, to condemn the terrorist attack on Shah-e Cheragh holy site.
They waved signs and chanted slogans asking for the prosecution of the perpetrators.
A heavily-armed terrorist assaulted the well-known shrine on Wednesday, just before the evening prayers, killing 13 pilgrims — including a lady and two children — and injuring at least 40 others.
The attacker opened fire indiscriminately on visitors within the shrine, according to the police commander of Fars Province. The perpetrator was wounded and taken into custody by security personnel. He later succumbed to his wounds.
Leader of the Islamic Revolution Ayatollah Seyed Ali Khamenei has offered condolences to the Iranian nation, assuring that the perpetrators of the “outrageous” crime will definitely face punishment.