A UTair Mil Mi-8 transport helicopter carrying 20 passengers crashed on landing, RIA Novosti reported.
"A Mi-8T helicopter crashed on landing at Sedelnikovo while landing. There were 20 workers on board, and according to initial information, four were hurt," an official said.
Three of those injured are in serious condition, the official said. Weather conditions at the landing site were reported to be poor.
Gal Gadot cast as Wonder Woman for 'Batman vs. Superman'
Benedict Cumberbatch's dramatic reading of R. Kelly lyrics is just what you need