Moscow concert hall attack: What we know so far

People are seen outside the burning Crocus City Hall concert hall following the shooting incident in Krasnogorsk, outside Moscow, on March 22, 2024. © AFP

The suburban Moscow concert hall where gunmen opened fire on concertgoers was a smoldering ruin on Saturday as the death toll in the attack surpassed 130 and Russia's President Vladimir Putin claimed the four assailants were captured while fleeing to Ukraine. Kyiv strongly denied any involvement in Friday's assault, for which the Islamic State (IS) group's Afghan affiliate has claimed responsibility. 

Here is what we know about the attack on the Crocus City Hall in Krasnogorsk ahead of a concert by the Piknik rock band: