MOSCOW (Reuters) - Russia's UTair airline said its Mi-8 helicopter chartered by the United Nations in South Sudan was shot down on Tuesday, according to preliminary information.

"According to preliminary information, the helicopter was shot down with surface-to-air fire and is lying 3 kilometers away from the destination airport," the company said in a statement.

It said four crew members were on board. The United Nations said earlier on Tuesday three of the crew were killed when the aircraft crashed on a routine cargo flight.


(Reporting by Gabriela Baczynska)