Four people died in a rough landing of an AS-350 helicopter in Russia’s Khanty -Mansi Autonomous District (Yugra), Natalia Gunkina of the local transport investigative department told TASS on Sunday, referring to preliminary information.

"The AS-350 helicopter made a rough landing near the Kedrovoye settlement; the preliminary information says on board were five people: two crew and three passengers. The preliminary information says four people died," she said.

Investigation is under way.

The helicopter served a Tumen - Khantymansiisk route.