ROUGH CUT (NO REPORTER NARRATION)<br/> <br />STORY: A car bomb killed three people in the southern Russian city of Pyatigorsk on Friday, officials said, in a worrying development for the Kremlin as Russia prepares to host the 2014 Winter Olympics in Sochi in six weeks' time.<br/> <br />Pyatigorsk lies 270 km (170 miles) east of Sochi, where the Games, a major prestige project for President Vladimir Putin, will open on Feb. 7.<br/> <br />Nobody immediately was blamed or claimed responsibility for the bombing in Pyatigorsk.
