Russian leaders have vowed to destroy the people behind the suicide bombing attacks on Moscow Metro.

The attacks came during the morning rush hour killing at least 38 people and injuring more than 60, officials said.

The British Broadcasting Corporation has reported that security services are blaming rebels from the North Caucasus - which includes Chechnya and Ingushetia although no group has claimed responsibility.

President Dmitry Medvedev laid a wreath at the scene of one of the attacks, labelling the plotters "beasts".

Medvedev 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.

It is believed that two female suicide bombers carried out the attacks, which took place within an hour of each other.

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