Dozens of rescuers are on site of helicopter crash in NW Iran.
All eyes on 'Vice President' Mohammad Mokhber, the person next in line in the presidency.
According to the Iranian constitution, in case of the president’s death or incapacity, the first vice president will take over and assume the functions of the president until an election is held within a maximum period of 50 days.
"No survivors" have been found at the crash site of the helicopter carrying Iran's President Ebrahim Raisi, according to Iranian state news channel IRINN and semi-official news agency Mehr News
As a live drone shows the crash site and 4 million watch.