US Intelligence Confirms , IS Involvement With Deadly , Moscow Concert Attack.<br />On March 22, an attack on Russia's <br />Crocus City Hall concert venue <br />killed at least 137 people. .<br />Associated Press reports that an affiliate of the Islamic <br />State has claimed responsibility for the attack, which <br />was the deadliest to occur on Russian soil in years.<br />Four suspects were arrested on March 23, <br />with seven other detained on suspicion of <br />having some involvement with the attack. .<br />Four suspects were arrested on March 23, <br />with seven other detained on suspicion of <br />having some involvement with the attack. .<br />In an address to the nation, Russian President <br />Vladimir Putin looked to tie the attack <br />to Ukraine, claiming that assailants <br />were captured while fleeing to Kyiv. .<br />In an address to the nation, Russian President <br />Vladimir Putin looked to tie the attack <br />to Ukraine, claiming that assailants <br />were captured while fleeing to Kyiv. .<br />On March 24, events at cultural institutions <br />across Russia were canceled and <br />flags were lowered to half-staff. .<br />On March 24, events at cultural institutions <br />across Russia were canceled and <br />flags were lowered to half-staff. .<br />State news agencyy RIA Novosti <br />announced that television and <br />advertising had also been suspended.<br />Rescue workers continue to search for the<br />site of the attack, while the death toll rises as <br />more bodies are found in the damaged building. .<br />Moscow's Department of Health said on March 24 <br />that the process of identifying the bodies of victims <br />by DNA testing would take at least two weeks.<br />AP reports that United States intelligence <br />officials confirmed the Islamic State (IS) <br />affiliate's responsibility for the attack, while <br />refuting Putin's claim that it was tied to Ukraine.<br />AP reports that United States intelligence <br />officials confirmed the Islamic State (IS) <br />affiliate's responsibility for the attack, while <br />refuting Putin's claim that it was tied to Ukraine.<br />ISIS bears sole responsibility <br />for this attack. There was no <br />Ukrainian involvement whatsoever, Adrienne Watson, National Security <br />Council spokeswoman, via Associated Press.<br />ISIS bears sole responsibility <br />for this attack. There was no <br />Ukrainian involvement whatsoever, Adrienne Watson, National Security <br />Council spokeswoman, via Associated Press
