Iranian President Ebrahim Raisi, a hardliner and potential successor to Supreme Leader Ayatollah Ali Khamenei, was killed in a helicopter crash in mountainous terrain near the Azerbaijan border, officials and state media said on Monday (May 20).
The charred wreckage of the helicopter which crashed on Sunday carrying Raisi, Foreign Minister Hossein Amirabdollahian and six other passengers and crew members was found early on Monday after an overnight search in blizzard conditions.
Iran's Supreme Leader Ayatollah Ali Khamenei, who holds ultimate power with a final say on foreign policy and Iran's nuclear programme, said First Vice President Mohammad Mokhber would take over as interim president, the official IRNA news agency reported.
"I announce five days of public mourning and offer my condolences to the dear people of Iran," Khamenei said in a statement. Mokhber, like Raisi, is seen as close to Khamenei.
Under the Islamic Republic's constitution, a new presidential election must be held within 50 days.
Khamenei had earlier sought to reassure Iranians, saying there would be no disruption to state affairs.
The crash comes at a time of growing dissent within Iran over an array of political, social and economic crises. Iran's clerical rulers face international pressure over Tehran's disputed nuclear programme and its deepening military ties with Russia during the war in Ukraine.
Since Iran's ally Hamas attacked Israel on Oct 7, provoking Israel's assault on Gaza, conflagrations involving Iran-aligned groups have erupted throughout the Middle East.
A long "shadow war" between Iran and Israel broke into the open last month with tit-for-tat exchanges of drone and missile fire.