Helicopter crash that killed Iran's President Ebrahim Raisi caused by weather, report finds

The helicopter crash that killed Iranian President Ebrahim Raisi and seven other people in May was caused by challenging climatic and atmospheric conditions, Iranian state TV reported Sunday.

The final report of the Supreme Board of the General Staff of the Armed Forces said the main cause of the helicopter crash was the complex climatic conditions of the region in spring, state TV said.

The report also cited the sudden appearance of a thick mass of dense fog rising upwards as the helicopter collided with the mountain.