"More than 1,300 people … We are trying to see how these people travel to Ukraine or other countries and we shall do everything in our power to press criminal charges against them," he told a briefing.
Hrytsak also did not rule out on Tuesday that the Russian servicemen detained on the Crimean border may be swapped in future for Ukrainian nationals.
The Russian Defense Ministry on Monday reported that Ukrainian Security Service officers kidnapped two Russian soldiers in Crimea November 20 and took them to Ukraine's Mykolaiv region with an apparent goal to press criminal charges against them.
“In theory, everything is possible [regarding swaps], but an investigator will soon determine their fate … and then maybe a court,” the official told a briefing.
Hrytsak specified that the Russian servicemen were accused in 2015 of desertion and treason.
