Russia imposed sanctions on 322 Ukrainian individuals and 68 entities set out in a government decree signed by Russian Prime Minister Dmitry Medvedev on Thursday, Russian news agency TASS reported.

The sanctions froze the Russian assets owned by a number of acting Ukrainian government officials and businessmen including former PM Yulia Tymoshenko and Ukrainian President Petro Poroshenko's son.

Relations between Kiev and Moscow have been deteriorating since early 2014 over Crimea and armed conflicts in eastern Ukraine. Kiev has imposed a series of sanctions against Russia since then.