Russian authorities on Monday reimposed an avalanche warning for the mountain resort used to host the Sochi Winter Olympic and Paralympic Games events, after an avalanche killed two women in the area at the weekend.

The avalanche hit the Rosa Khutor complex used for the Olympic and Paralympic Alpine events, killing a teenage girl and a woman, at around noon on Sunday, regional investigators said Monday.

That drone you might have spotted hovering and zipping around the Sochi Olympic slopes isn't searching for terrorists or protesters hiding behind the fir trees.

It's being used to transmit live video of snowboard and ski jump competitions to a screen near you.

Russia on Thursday launched a counter-terror operation after five bodies riddled with bullets were found in a southern region bordering the Winter Olympics host Sochi, less than a month before the start of the games.

Two districts in the Stavropol region were placed on high alert after the bodies were found in four cars, one of them apparently booby-trapped, in the area on Wednesday, the Interfax news agency quoted the FSB security service as saying.