Preparations are ongoing at the Mosalla Mosque, the main prayer site in Tehran, for the funeral ceremony of former Iranian Supreme Leader Ali Khamenei, who was killed in a U.S.-Israeli strike on Feb. 28.

Giant portraits of Ayatollah Ali Khamenei, Iran's late supreme leader killed in US-Israeli airstrikes, hung from Tehran's Grand Mosalla as workers raced to prepare for his funeral…

Iran prepares for the grand funeral of late Supreme Leader Ayatollah Ali Khamenei in Tehran, with millions expected to attend.