No signs of life have been found at the crash site of a helicopter carrying Iran's president, with a former detainee saying his death would shake up the regime's politics.
The wreckage of a helicopter that crashed while carrying Iran's president has been found with "no signs of life" on board, state media report.
Iranian President Ebrahim Raisi and the country's foreign minister Hossein Amirabdollahian were travelling on the aircraft when it crashed over mountainous terrain in heavy fog.
