Female suicide bomber kills at least 16 at Russian train station

Story here. Excerpt:

'VOLGOGRAD, Russia (Reuters) - A suicide bomber set off a blast in the entrance hall of a Russian train station on Sunday, investigators said, killing at least 16 people in the second deadly attack within three days as the country prepares to host the Winter Olympics.

Authorities said the attacker detonated a shrapnel-filled bomb in front of a metal detector just inside the main entrance of the station in Volgograd, a busy hub north of the violence-plagued North Caucasus region on Russia's southern fringe.

Islamist militants in the North Caucasus have carried out a long string of attacks since President Vladimir Putin came to power in 2000. They now confront him with his biggest security challenge, threatening to disrupt the Olympics that start in the Black Sea resort of Sochi in 40 days.

Footage shown on TV captured the moment of the blast, as a massive orange fireball filled the hall of the stately, colonnaded station and clouds of grey smoke poured out of shattered windows.
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The federal Investigative Committee and other officials initially said a female suicide bomber had blown herself up after a police officer started to approach her near the metal detector because she looked suspicious.
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It said authorities had identified her as a resident of Dagestan, the province adjacent to Chechnya and now the center of a long-running Islamist insurgency, and the widow of two militants who were both killed by Russian security forces.
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Interfax cited law enforcement sources as saying authorities believed the attacker was a man who brought a bomb into the station with a rucksack. Some bombs carried by female suicide bombers have been set off remotely by male accomplices.

So-called 'black widows', seeking to avenge fallen husbands, were involved in a deadly Moscow theatre siege in 2002 and have been behind several bombings including twin suicide attacks that killed 40 on the Moscow subway in 2010.

"We can expect more such attacks," said Alexei Filatov, deputy head of the veterans' association of the elite Alfa anti-terrorism unit.'