Russia's emergencies service says one of its helicopters has crashed into Lake Onega, in the northwestern region of Karelia, killing all three crew on board. Communication was lost with the Mi-8 helicopter, which was on a training mission, on February 4, the service said. The wreckage was located some 11 kilometers from the shore of the lake, Europe's second-largest, at a depth of 50 meters, the Emergency Situations Ministry said in a statement on February 5. The cause of the crash was not immediately known, authorities said, adding that an investigation has been opened. To read the original story by Current Time, click here.