A thick mass of fog caused the helicopter that was carrying Raisi and his companions to crash into the mountain, an Iranian probe has concluded on Sunday.
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![Iranian President-Elect Ebrahim Raisi holds a press conference at Shahid Beheshti conference hall on 21 June, 2021 in Tehran, Iran. [Getty]](/sites/default/files/styles/image_156x88/public/2021-06/pressy_0.jpg?h=d1f0e8ce&itok=XfpJZ9Tk)
