A funeral procession for Iran's late Supreme Leader, Ayatollah Ali Khamenei, has begun moving through the streets of Tehran [1].

The death of the longtime leader marks a pivotal transition for the Islamic Republic, triggering a period of national mourning and strict security measures in the capital.

Authorities have shut down streets, airspace, and daily life to accommodate the mourning period [2]. The process of honoring the late leader is expected to conclude Thursday [2]. Large crowds have gathered across the city to pay their respects as the procession moves through the urban center [1].

Reports regarding the exact start of the funeral events vary among news agencies. The BBC said the funeral began on Friday [3]. NBC News said that the mourning period began Saturday [2], while Yahoo News said that the funeral procession set out on Monday morning [4].

Ali Khamenei died at the age of 86 [2]. There are conflicting reports regarding the circumstances of his death. The BBC said that the late ayatollah was killed in U.S.-Israeli air strikes in February [3]. Other reports focused on the logistics of the state funeral and the closure of the city [2].

Tehran remains under tight control as the government manages the movement of thousands of mourners. The closure of airspace indicates the high-level security protocols currently in place to ensure the safety of the procession, and attending officials [2].

Authorities have shut down streets, airspace, and daily life for the mourning

The death of Ayatollah Ali Khamenei creates a power vacuum at the highest level of Iran's theocratic government. The conflicting reports regarding the cause of his death—specifically the claim of foreign air strikes—suggest a volatile security environment that could influence the transition of power and the state's subsequent foreign policy response.