Video of Russia Volgograd Train Station Blast

In this photo made by a public camera and made available by the Associated Press Television News the flash of an explosion illuminates the entrance to Volgograd railway station in Volgograd Russia on Sunday, Dec. 29, 2013. More then a dozen people were killed and scores were wounded Sunday by a suicide bomber at a railway station in southern Russia, officials said, heightening concern about terrorism ahead of February's Olympics in the Black Sea resort of Sochi. (AP Photo/ Associated Press Television News)

Fifteen people died and scores were wounded Sunday as a female suicide bomber struck at a railway station in Volgograd, southern Russia, officials said, heightening concern about terrorism ahead of February’s Olympics in the Black Sea resort of Sochi. 

The Associated Press contributed to this report.