A bomb blast tore through a bus in the southern Russian city of Volgograd on Monday, authorities said, killing at least five people in the deadliest such attack outside Russia's volatile North Caucasus region in nearly three years.
The explosion also wounded 17 people, seven of whom were in
grave condition, a spokesman for the local investigators said.
series of conflicting reports about the cause, the National Anti-Terrorism
Committee said it was a bomb.
"Today at 2:05 p.m., an unknown explosive
device detonated on a passenger bus in the city of Volgograd, causing human
casualties," the committee, Russia's top counter-insurgency agency, said in a
It did not assign blame and there was no immediate claim of
Insurgents who say they are fighting to create an Islamic
state in Russia's mostly Muslim North Caucasus have carried out deadly bombings
inside and outside the region, made up of several provinces along Russia's
The insurgents claimed responsibility for a suicide
bombing that killed 37 people at Moscow airport in January, 2011, and two nearly
simultaneous suicide bombings that killed 40 people on the Moscow subway in
Volgograd is a city of around one million people that lies 900 km
(560 miles) southeast of Moscow and a few hundred kilometers north of the North
Caucasus and Black Sea resort city of Sochi, where Russia will host the 2014
President Vladimir Putin has staked his reputation on
the Games and ordered authorities to boost security in the North Caucasus, where
the Islamist insurgency is rooted in two post-Soviet wars pitting Chechen
separatists against the Kremlin.