Ukraine war latest updates: 'Radical Islamists' carried out Moscow terror attack, Putin says, but he insists Ukraine link exists

This is CNBC's live blog tracking developments on the war in Ukraine. See below for the latest updates. 

Russian President Vladimir Putin conceded on Monday that the deadly terrorist attack in Moscow last Friday was carried out by "radical Islamists" but insisted that there was a link to Ukraine, without presenting evidence.

The Islamic State group said it was behind the attack on the Crocus City Hall venue on Friday night, which left 139 people dead and over 100 injured, but Putin suggested the attackers had links to Ukraine, without presenting evidence.

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Putin expected to use deadly Moscow attack to Russia's advantage, whoever's to blame

Discussing an ongoing investigation into the attack with Kremlin officials Monday, Putin said "we know that the crime was committed by radical Islamists, whose ideology the Islamic world itself has been fighting for centuries."

"But we also see that the United States, through various channels, is trying to convince its satellites and other countries of the world that, according to their intelligence data, there is supposedly no Kyiv trace in the Moscow terrorist attack, that the bloody terrorist attack was carried out by followers of Islam, members of the ISIS organization banned in Russia."

Kyiv denied involvement in the attack, saying it was "absolutely predictable" that Moscow would baselessly claim Ukraine was involved. U.S. officials also dismissed any link to Kyiv; White House spokesperson John Kirby told reporters Monday, "There was no linkage ... This is just more Kremlin propaganda."

Russia's security service, the FSB, reportedly announced on Tuesday that it had prevented a terrorist attack at a humanitarian aid reception point in the Samara region in southwestern