Nine fatalities have resulted from the crash of an Antonov An-12 transport at the Siberian city of Irkutsk.
The four-engined aircraft came down near a rail station, the Russian emergencies ministry states.
Meteorological data for Irkutsk airport at the time of the accident – which the ministry puts at 21:39 local – points to low visibility of around 1,700m and also indicates smoky conditions.
Temperatures in the area are extremely cold, around minus 28C.
The ministry says the aircraft had been operating a freight service between Novosibirsk and Irkutsk, and that it struck warehouses.
It states that the fatalities include six crew members and three other personnel accompanying the cargo.
Investigators have not identified the operator of the aircraft. Irkut aircraft plant manufactured the An-12 in the 1950s and 1960s.