Russian authorities baselessly suggested Ukrainian involvement even as ISIS has claimed responsibility and U.S. officials reportedly confirmed the group was behind the attack.
Everything you need to know about the history and motive of the Islamic State Khorasan, which took credit for the horrific attack carried out in Moscow this week
Russian authorities arrested four people suspected of taking part in the attack on a suburban Moscow concert hall that killed at least 133 people and believe
Russia detains 11 in attack on Moscow concert hall that killed 133 torontosun.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from torontosun.com Daily Mail and Mail on Sunday newspapers.