Iran president dead: What we know so far about the mysterious crash of the helicopter?

On Monday, Iranian state television announced the death of President Ebrahim Raisi. As of Monday morning, rescuers had not yet reached the site, though they spotted the helicopter approximately 2 kilometers away at dawn. Reports indicate slim chances of survival. Several countries have expressed concern and offered help. The crash occurred in Iran's East Azerbaijan province, which is notorious for its harsh weather conditions and dense fog.