REUTERS

The detainees were described as Central Asians, and the statement by the Federal Security Service (FSB) noted the cooperation of the security agencies of Kyrgyzstan and Tajikistan, RFE/RL reported.

Read alsoRussia's claim of "Ukrainian saboteurs" attempt to discredit Ukraine – military intelThe FSB added that "four powerful improvised explosive devices" were found during the raids, as well as "remote-control devices, firearms, ammunition, and communications devices."

Officials accused the detainees of having contacts with the Islamic State (IS) terrorist organization.

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