The FSB arrested four associates of Ukraine's special services in Adygea, Donetsk and Omsk.
According to the department, three Russian citizens and one foreigner were arrested. On the order of the Ukrainian curators, they collected information about the Russian army taking part in the Northern Military District, about the objects of the military-industrial and energy-fuel complexes for further attacks.
A Kiev agent arrested in the DPR was charged with blowing up a military vehicle, the FSB reported.