A helicopter carrying the Iranian president has been involved in an accident, BBC reports.

President Ebrahim Raisi was on board a helicopter that experienced a hard landing on Sunday, Iranian state media said.

It was also said to be carrying Iran's Foreign Minister Hossein Amirabdollahian.

The Interior Minister said rescuers were still trying to reach the site due to the difficult weather conditions.

The condition of those on board the helicopter remains unknown for now, with reports that no contact has yet been made.

According to local media, President Raisi was heading to the city of Tabriz, in the north west of Iran, after returning the border with Azerbaijan, where he opened the Qiz Qalasi and Khodaafarin dams.

Heavy fog is making the search difficult at the site where it is thought that the helicopter may have landed, according to a reporter with Fars news agency.

He said the visibility in the mountainous and wooded area was down to only about five meters.

The area is about 50km to the north of Tabriz.

Ahmad Alirezabeigi, Iranian MP for the city of Tabriz, has told reporters in Tehran that rescue workers have yet to find the location of the helicopter carrying the president and foreign minister.

He added that the other two helicopters in the convoy landed safely.

Footage has emerged on state television showing worshippers praying for the president’s health in the holy city of Mashhad.

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