Moscow Metro bombing masterminds 'will be destroyed'
Commuter Alan Broach: "There was a lot of fear and concern around"
The masterminds behind a double suicide bombing on the Moscow Metro will be "destroyed", Russian leaders have said.
The attacks, in the morning rush hour, killed at least 38 people and injured more than 60, officials say.
No group has said it carried out the attacks, but security services have blamed rebels from the North Caucasus - which includes Chechnya and Ingushetia.
President Dmitry Medvedev laid a wreath at the scene of one of the attacks, labelling the plotters "beasts".
He said: "We will find and destroy them all."
US President Barack Obama called President Medvedev to "personally convey" his condolences, adding that the US was ready to co-operate with Russia to help bring to justice those responsible for the blasts.
MOSCOW METRO ATTACKS
March 2010: Two suicide bombers blow themselves up at Lubyanka station and Park Kultury station, killing 35 people
August 2004: Suicide bomber blows herself up outside Rizhskaya station, killing 10
February 2004: Suicide bombing on Zamoskvoretskaya line, linking main airports, kills 40
August 2000: Bomb in pedestrian tunnel leading to Tverskaya station kills 13
February 2000: Blast injures 20 inside Belorusskaya station
January 1998: Three injured by blast at Tretyakovskaya station
June 1996: Bomb on the Serpukhovskaya line kills four
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