A spokesperson for the Ukrainian Security Service (SBU) said that a Russian intelligence agent has been held in the town of Rivne.
"The spy, a Ukrainian citizen who permanently resides in Russia, was to recruit a senior officer from the headquarters of the Ground Force of the Ukrainian Armed Forces," the SBU spokesperson said in a statement on Sunday.
"In exchange for passing documents classified as 'secret' and 'top secret' concerning the military training, armament, mobilisation deployment and military cooperation between the Ukrainian Armed Forces and foreign partners, the GRU [Russian military intelligence] agent was to offer to a Ukrainian officer and his family Russian citizenship and money. The amount depended on the relevance and importance of the military secrets," the spokesperson said.
The SBU counter-intelligence has identified the spy's curator as "Russian secret agent Alexander Ilyukhin," the spokesperson said.
Having received the offer of cooperation with the Russian secret services, the Ukrainian military officer turned to the SBU; on October 7, 2016, the Russian spy entered Ukraine to receive classified documents on which Ukrainian security operatives had already "worked," the SBU spokesperson said.
The following day he was held by SBU officers while receiving a memory stick containing disinformation that he believed to be the classified material of military nature.
Investigatory actions are underway.