Russia's Federal Security Service announced that 140 people have been detained in the Russian capital for suspected membership in extremist Islamist organizations.
More than 30 of those detained are reportedly foreign nationals, the FSB said in a statement.
According to law enforcement, the chapel in southern Moscow, Dar al-arkam, where the suspects were detained was often visited by people who later "converted to radicalism and joined militant groups active in the North Caucasus, as well as participated in preparing and perpetrating terrorist acts in Russia."
