Russia observes national day of mourning after Moscow concert hall massacre

Russia observed a national day of mourning on Sunday as investigators said the death toll from Friday's massacre in a concert hall near Moscow had risen to at least 137, making it the deadliest attack in Europe to have been claimed by the Islamic State (IS) group.

Russian President Vladimir Putin has vowed to punish those behind the "barbaric terrorist attack", saying four gunmen trying to flee to Ukraine had been arrested.

Kyiv has strongly denied any connection, with Ukrainian President Volodymyr Zelensky accusing Putin of trying to shift the blame onto them.

Russian officials on Sunday said the confirmed death toll from the attack on the Crocus City Hall concert venue had risen to at least 137, including three children.

They warned that the number was expected to rise further, with more than 100 wounded in hospital.

Read moreIn pictures: Gunmen open fire in deadly attack on Moscow concert hall

The ministry posted a video Sunday of heavy equipment arriving at the scene to dismantle damaged structures and clear debris.

Read more on FRANCE 24 English

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