Russia says one of its helicopters has been shot down over Armenia

The Russian military said on Monday that one of its Mi-24 helicopters had been shot down over Armenia near the border with a region belonging to Azerbaijan, killing two crew members and injuring another.

The helicopter was downed using a man-portable air-defense system, the defense ministry said in a statement.

Russia's military base in Armenia is investigating to determine who was responsible for the downing of the helicopter, the statement said.