Tajikistan detains 9 people over Russian concert hall attack

Tajikistan has detained nine people this week suspected of having links to a mass shooting at a Russian concert hall last Friday and also to the militant Islamist group that claimed responsibility, a Tajik security source told Reuters. Four suspected gunmen behind the deadliest attack in Russia in 20 years are Tajik citizens. They have been arrested along with seven other suspects, some of whom also come from the ex-Soviet Central Asian nation.