Iranian President Ebrahim Raisi, the country's foreign minister and several other officials have been found dead hours after their helicopter crashed in a foggy, mountainous region of the country's northwest, state media reports.
Subscribe now for unlimited access.
The crash comes as the Middle East remains unsettled by the Israel-Hamas war, during which Raisi, who was 63, under Supreme Leader Ayatollah Ali Khamenei launched an unprecedented drone-and-missile attack on Israel only a month earlier in April.
During Raisi's term in office, Iran enriched uranium closer than ever to weapons-grade levels, further escalating tensions with the West as Tehran also supplied bomb-carrying drones to Russia for its war in Ukraine and armed militia groups across the region.
Meanwhile, Iran has faced years of mass protests against its Shi'ite theocracy over its ailing economy and women's rights, making the moment that much more sensitive for Tehran.
Khamenei hours later announced Iran's first vice-president, Mohammad Mokhber, would serve as the country's acting president until elections were held.
State TV gave no immediate cause for the crash on Sunday in Iran's East Azerbaijan province.
Among the dead was Iranian Foreign Minister Hossein Amirabdollahian, 60.
The helicopter also carried the governor of Iran's East Azerbaijan province, other officials and bodyguards, the state-run IRNA news agency reported.
Turkish authorities on Monday released drone footage showing what appeared to be a fire in the wilderness that they "suspected to be wreckage of helicopter" .
The co-ordinates put the fire some 20km south of the Azerbaijan-Iranian border on the side of a steep mountain.
Condolences came from Iran's regional neighbours including the leaders of Turkey, India, Iraq and Pakistan, as well as China, the European Union and Russia.
Iran-backed militant group Hamas, fighting Israeli forces in Gaza with Tehran's support, expressed sympathy to the Iranian people for "this immense loss".
Lebanon's Iran-backed Hezbollah group and the Houthi rebels in Yemen also issued statements praising Raisi and mourning his death.
Israel, meanwhile, denied involvement in the crash. "It wasn't us," said an Israeli the official, who requested anonymity.
Khamenei, who had himself urged the public to pray Sunday night, stressed the business of Iran's government would continue no matter what.
Under the Iranian constitution, Iran's first vice-president takes over if the president dies, with Khamenei's assent, and a new presidential election is called within 50 days.
Khamenei's condolence message Monday over Raisi's "martyrdom", declared five days of public mourning and acknowledged Mokhber had taken the role of acting president.
An emergency cabinet meeting was held as state media made the announcement on Monday morning.
The cabinet issued a statement afterward pledging it would follow Raisi's path and "with the help of God and the people, there will be no problem with management of the country".
A hardliner who formerly led the country's judiciary, Raisi was viewed as a protege of Khamenei and some analysts had suggested he could replace the 85-year-old leader after Khamenei's death or resignation.
With Raisi's death, the only other person suggested has been Mojtaba Khameini, the 55-year-old son to the supreme leader.
However, some have raised concerns over the position being taken only for the third time since 1979 to a family member, particularly after the Islamic Revolution overthrew the hereditary Pahlavi monarchy of the Shah.
Raisi won Iran's 2021 presidential election, a vote that saw the lowest turnout by percentage in the Islamic Republic's history.
The US sanctioned Raisi in part over his involvement in the mass execution of thousands of political prisoners in 1988 at the end of the bloody Iran-Iraq war.
Under Raisi, Iran continues to enrich uranium and hampers international inspections.
Iran has armed Russia in its war on Ukraine, as well as launched a massive drone-and-missile attack on Israel amid its war against Hamas in the Gaza Strip.
It also has continued arming proxy groups in the Mideast, such as the Houthis and Hezbollah.
Meanwhile, mass protests in the country have raged for years.
The most recent involved the 2022 death of Mahsa Amini, a woman who had been detained over allegedly not wearing a hijab, or headscarf, to the liking of authorities.
The months-long crackdown that followed the demonstrations killed more than 500 people and resulted in more than 22,000 detained.
Raisi is the second Iranian president to die in office after a bomb blast killed Mohammad Ali Rajai in 1981.
AP with Reuters
Australian Associated Press
