Radio contact with an aircraft carrying almost 30 people has been lost in eastern Russia.
Earlier, the Russian Civil Defence had confirmed that the radio contact with the pilots had been lost.
The Russian Federal Agency for Air Transport (Rosaviatsiya) said conditions were foggy as the plane prepared to land.
According to preliminary information, 28 people were on board, including six crew members.
Meanwhile, a civil defence units has been deployed to the area to search for the plane and dispatched a helicopter with doctors and medical staff on board.