passage: A manhunt has been launched four 'black widows' planning to suicide bomb the Winter Olympics. Officers are scouring Sochi, where the games begin next month, with wanted posters featuring Ruzan Ibragimova, 22, whose husband was killed by Russian security forces last year. The suspect, from Dagestan - a city notorious for its use of 'black widows' - is believed to be plotting an attack with three other women. SCROLL DOWN FOR VIDEO Wanted: Ruzan Ibragimov, whose husband was an Islamist militant killed by Russian security forces last year, is one of the 'black widow' terrorists who may be in Sochi plotting an attack
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  Posters of Ruzan Ibragimova, 23, the wife of a Islamist militant killed by Russian security forces last year, have been put up in the Olympic city
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  She has a scar on her cheek, a limp, and one arm won't bend at the elbow
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  Authorities believe she has left her home in Dagestan for Winter Olympics
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  Video featuring two men has been posted on militant Chechen website
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  Men may be linked to December 2013 Volgograd bombings
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  They warn of 'surprise package' that will be 'for all the Muslim blood that is shed every day around the world'
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  Russian president Vladimir Putin said earlier this week Russia will do 'whatever it takes' for security at the Games
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  US and Russian officials may be looking for as many as four 'black widows' who could be trying to launch an attack on Sochi
query: Investigators work at the site of a blast on a trolleybus in @placeholder on December 30, 2013 in this photograph
entities: Chechen Dagestan Games Islamist Muslim Olympic Russia Russian Ruzan Ibragimov Ruzan Ibragimova Sochi US Vladimir Putin Volgograd Winter Olympics