Iranian President Ebrahim Raisi, a hardliner seen as a potential successor to Supreme Leader Ayatollah Ali Khamenei, was killed after his helicopter crashed in poor weather in mountains near the Azerbaijan border, officials and state media said on Monday, Reuters reports.
The charred wreckage of the helicopter which crashed on Sunday carrying Raisi, Foreign Minister Hossein Amirabdollahian and six other passengers and crew was found early on Monday after an overnight search in blizzard conditions.
Supreme Leader 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.
Footage from Iranian state television showed wreckage scattered on a foggy hillside, while separate images from IRNA showed Red Crescent workers carrying a covered body on a stretcher. All those aboard the helicopter were killed, a senior Iranian official had earlier told Reuters.
Deputy Foreign Minister Ali Bagheri Kani was appointed as acting foreign minister following the death of Amirabdollahian, IRNA said.
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.
State media reported that images from the site showed the U.S.-made Bell 212 helicopter slammed into a mountain peak, although there was no official word on the cause of the crash. The dead also included the governor of East Azerbaijan Province and a senior imam from Tabriz city.
An Israeli official told Reuters it was not involved in the crash. "It wasn't us," said the official, who requested anonymity.