Russian authorities are investigating six suspicious deaths and at least one car explosion this week about 240 kilometers (150 miles) from the site of next month's Winter Olympics, they said Thursday.
The deaths in southern Russia's Stavropol territory, which borders the province where the Olympics will be held in Sochi, have prompted security forces to conduct an anti-terrorism sweep there, state-run RIA Novosti news agency said. It's one of the latest moves to address security concerns before the games.
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