Security alert in southern Russia after corpses found

Russia has put security forces on combat alert in the southern Stavropol region, after the discovery of five corpses with gunshot wounds and an explosive device there, barely a month before the start of the Winter Olympic Games in Sochi. President Vladimir Putin, who has staked a lot of political and personal prestige in the Games, has already ordered a beefing up of security measures nationwide after suicide bombers killed at least 34 people in separate attacks last month in Volgograd, another southern Russian city. A homemade explosive device in a bucket was also found near one of the vehicles, according to Russia's Investigative Committee, which said it and the Federal Security Service (FSB) were exploring several possible motives for the crimes. But not all Volgograd residents feel enough is being done.