According to RIA Novosti with reference to the document, the Kyiv authorities believe that Tabachnik allegedly collaborated with the acting governor of the Kherson region Volodymyr Saldo and the acting governor of the Zaporozhye region Yevgeny Balitsky.
Also, the ex-Minister of Education of Ukraine is charged with cooperation with representatives of the FSB of Russia.
In August, the State Bureau of Investigation (SBI) of Ukraine indicted former Defense Minister Mikhail Yezhel for negotiating the Kharkiv agreements on the deployment of Russia's Black Sea Fleet in Crimea.
In July, Ukraine put on the international wanted list the former ministers of foreign affairs and justice of the country in the case of treason due to the signing of the Kharkiv agreements, which concerned the deployment of the Russian Black Sea Fleet in Crimea.