Moscow Attack: Putin's Men In Offensive Mode; Father, Two Sons Held For 'Aiding' ISIS Gunmen

Russia arrested three more men accused of aiding and abetting Islamic State gunmen involved in Moscow attack. The trio has been sent in pre-trial custody until May 22 by a court in Moscow. Reports said that two of the accused had approached police themselves following the attack in Moscow. Earlier, four main shooting suspects were also sent in pre-trial custody by the court. Watch the video for more.