MOSCOW — A female suicide bomber blew herself up on a city bus in southern Russia on Monday, killing six people and injuring about 30, officials said. The attack in Volgograd added to security fears ahead of the Winter Olympics in Sochi.
The suspected bomber was from the North Caucasus, a region in southern Russia where an Islamic insurgency has been simmering for more than a decade following two separatist wars in Chechnya. A local official said the suspected attacker was married to an Islamic militant.
Volgograd, previously known as Stalingrad, lies 400 miles to the northeast of the North Caucasus, while Sochi sits to the west along the Black Sea.
No one immediately claimed responsibility for Monday's suicide bombing, but it was the first outside the North Caucasus since Chechen rebel leader Doku Umarov three months ago called for a resumption of attacks on civilians and urged militants to target the Sochi Games, which are to be held in February.
The suspected bomber was from Dagestan, one of the predominantly Muslim republics in the North Caucasus, said Vladimir Markin, the spokesman for the Investigative Committee, Russia's main investigative agency.
In a statement, he identified the suspect as 30-year-old Naida Asiyalova. Russian state television showed pictures of Asiyalova's passport.