Three sons of the late Iranian Supreme Leader Ali Khamenei performed the funeral prayer for him and four other family members in Tehran on Sunday, but his son and successor Mojtaba did not appear.

State television broadcast footage of Mostafa, Meysam and Masoud Khamenei performing the funeral prayer in front of coffins placed in the vast courtyard of the Great Imam Khomeini Prayer Hall in Tehran, a sprawling religious complex.

Follow the story: 'Trump': Iran seeks deal after 'harsh lesson'.. and a week deadline for Khamenei's funeral

Iran is organizing a week of mass mourning ceremonies for Khamenei, including the transfer of the body to two cities in neighboring Iraq, to demonstrate what Iranian media said was the nation's loyalty and 'renewal of the covenant with the ideals of the leaders of the revolution and Islam.'

After a number of top Iranian leaders and foreign officials flocked to pay their last respects to Khamenei's casket, laid in a vast hall in Tehran on Friday, the casket was placed outdoors under a glass cover on Saturday, alongside the coffins of his daughter, son-in-law, daughter-in-law, and granddaughter who was only 14 months old.

Mojtaba has not appeared publicly or had his photo published so far, and he is said to have been injured in the attack that killed his father and family members on February 28, when Israel and the United States bombed Iranian targets at the start of the war.

People close to him told Reuters that Mojtaba Khamenei's face was disfigured and he suffered a severe wound to one or both legs.

Under the ceasefire agreement with Washington, the war that erupted four months ago has stopped, and Iranian authorities say the agreement will ultimately bring significant economic gains to the country in what they describe as a victory over a superpower.

US President Donald Trump told Axios news website that talks with Tehran have halted for a week due to the funeral ceremonies.

Earlier on Sunday, Iranian President Masoud Pezeshkian and Parliament Speaker Mohammad Bagher Ghalibaf performed the funeral prayer. Masoud Khamenei was seen crying and wiping his tears with a scarf that is a symbol in Iran of revolutionary principles and solidarity with Palestinians.