Russian security forces stand guard
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US warns of Sochi 'toothpaste' bomb

6 February 2014 Last updated at 07:00 GMT

The US has warned airlines flying into Russia for the Winter Olympics that explosives hidden in toothpaste tubes could be smuggled on to planes.

Officials say bombs could be assembled on a flight or upon arrival at Sochi where the Winter Olympics have started.

Russian Government forces are on high alert to head off possible militant attacks.

Beth McLeod reports.