According to the latest data, fifteen people have been killed and 10 others are in intensive care after the Mi-8 helicopter crashed in the Krasnoyarsk Territory, in Eastern Siberia, a senior aide to the local transport prosecutor has said.

"At the moment, 15 people have been killed and 10 people are in intensive care, one is being retrieved from the destroyed fuselage of the helicopter," Oksana Gorbunova told TASS.

It was earlier reported that twelve people were believed to be dead after the crash.

The helicopter was carrying 25 people, including 22 passengers and three crew members. "The helicopter has fallen in the Yenisei [river] and is lying on the ice. People are being evacuated," local police told TASS.

The helicopter was en route from Igarka to an oil production facility in Krasny Selkub. The emergencies ministry said the helicopter made a hard landing in a difficult access area some 2 kilometers from the airport of Igarka and its fuselage was destroyed without catching fire.