Iran held funeral prayers and a three-day mourning ceremony for Supreme Leader Ayatollah Ali Khamenei in Tehran on Sunday [1].

The event marks a critical transition for the Islamic Republic, as the death of the long-standing leader creates a potential power vacuum in the region.

Iranian authorities said Khamenei was a martyr during the proceedings [1]. The mourning period, which began July 5, 2026, follows a funeral plan that was first announced June 2 [2].

Officials said attendance in Tehran was expected to reach up to 20 million people [2]. While ceremonies were centered in the capital, additional mourning events took place in other Iranian cities [1, 2].

Three of Khamenei's sons joined the mourning ceremonies [1]. However, the leader's designated successor has not been seen in public since February 2026 [1].

The absence of the successor during the funeral prayers has drawn attention to the internal stability of the Iranian leadership. The three-day period is designed to allow millions of citizens, and regional allies, to pay their respects to the deceased leader [1, 2].

“Iranian authorities said Khamenei was a martyr during the proceedings.”

The scale of the mourning ceremonies underscores the state's effort to maintain legitimacy through a show of mass public support. However, the continued absence of the designated successor—who has been out of the public eye for nearly five months—suggests potential instability or a contested transition of power within the clerical establishment.