An advertising screen on the facade of a building displays an image of a lit candle and the slogan (We) Mourn in memory of victims of the concert hall gun attack in Moscow on March 23, 2024. Gunmen who opened fire at a Moscow concert hall killed more than 60 people and wounded over 100 while sparking an inferno, authorities said on March 23, 2024, with the Islamic State group claiming responsibility. AFP

This photograph taken on March 23, 2024 shows the damaged and burnt out Crocus City Hall concert hall following the gun attack in Krasnogorsk, outside Moscow. Gunmen who opened fire at a Moscow concert hall killed more than 60 people and wounded over 100 while sparking an inferno, authorities said on March 23, 2024, with the Islamic State group claiming responsibility. AFP

People lay flowers at a makeshift memorial in front of the Crocus City Hall, A day after a gun attack in Krasnogorsk, outside Moscow, on March 23, 2024. AFP

A person stands next to a makeshift memorial in front of the Crocus City Hall, a day after a gun attack in Krasnogorsk, outside Moscow, on March 23, 2024. AFP

People lay flowers at a makeshift memorial in front of the Crocus City Hall, A day after a gun attack in Krasnogorsk, outside Moscow, on March 23, 2024. AFP

A man lights a candle at a makeshift memorial in front of the Crocus City Hall, a day after a gun attack in Krasnogorsk, outside Moscow, on March 23, 2024. AFP

A man lays flowers at a makeshift memorial in front of the Crocus City Hall, a day after a gun attack in Krasnogorsk, outside Moscow, on March 23, 2024. AFP

A man lays flowers at a makeshift memorial in front of the Crocus City Hall, a day after a gun attack in Krasnogorsk, outside Moscow, on March 23, 2024. AFP

A woman places flowers at the fence next to the Crocus City Hall, on the western edge of Moscow, Russia, Saturday, March 23, 2024. AP

This photograph taken on March 23, 2024 shows flowers and a Teddy bear doll placed at a makeshift memorial in front of the Crocus City Hall in Krasnogorsk, outside Moscow, a day after a gun attack. AFP

Russian law enforcement officers walk at the site of a gun attack on the Crocus City Hall in Krasnogorsk, outside Moscow, on March 23, 2024. AFP

A woman places flowers at the fence next to the Crocus City Hall, on the western edge of Moscow, Russia, Saturday, March 23. AP