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.
![Ebrahim Raisi vowed a 'steadfast' investigation [Getty]](/sites/default/files/styles/image_156x88/public/2022-09/GettyImages-1243432987.jpg?h=199d8c1f&itok=X9h2-RpB)
![Raisi demanded guarantees that the US not withdraw from a revived nuclear deal [Getty]](/sites/default/files/styles/image_156x88/public/2022-09/GettyImages-1243433882.jpg?h=199d8c1f&itok=X2g8bF0S)
