Iran’s Supreme Leader Ayatollah Ali Khamenei has announced five days of mourning following the death of the country’s President, Ebrahim Raisi.
Mr Raisi was killed in a helicopter crash in a mountainous area of north-western Iran, along with Foreign Minister Hossein Amir-Abdollahian.
State media confirmed they were killed after the helicopter they were travelling in came down on Sunday.
Ayatollah Khamenei said he offered his condolences “to the dear people of Iran”.
Mr Raisi, 63, had been tipped as a potential successor to the supreme leader.
State media said elections would be held on 28 June to choose a new president.
In the meantime, Vice-President Mohammad Mokhber has been appointed to assume interim duties.
Iran’s cabinet has also appointed deputy Foreign Minister Ali Bagheri Kani as acting foreign minister.