Suspects Linked to Moscow Attack Detained in the Caucasus, Says Russian Security Agency

Russia's FSB has detained four suspects in Dagestan, alleging their involvement in providing weapons and funds to the gunmen who attacked a Moscow concert hall in March, killing 144 people. The suspects are said to be foreign nationals, and their arrest follows that of the four suspected gunmen and seven others accused of involvement in the attack. An affiliate of the Islamic State group claimed responsibility for the attack, while President Putin alleged, without evidence, involvement of Ukraine and the West. Additionally, a Moscow court ordered a suspected accomplice of the attackers to two months in pretrial detention.