Thousands gathered in Tehran’s Revolution Square as the coffin of Iran’s slain supreme leader was carried through the capital, with mourners calling for 'justice and revenge' and authorities shutting streets and airspace for the ceremonies

Iran expects up to 20 million people in Tehran for three days of tributes.

Mourners beat their chests and chanted “revenge, revenge” as thousands gathered in Tehran early on Saturday for a final farewell to slain supreme leader Ayatollah Ali Khamenei.