June 8 (UPI) -- A Russian defense official Sunday said trains carrying the remains of Ukrainian soldiers would be dispatched to an area near the Ukrainian border, stepping up tensions between Moscow and Kyiv over a long simmer dispute over a war prisoner swap.

"I can tell that in just an hour, repatriation trains carrying the bodies of military personnel will also begin to move," Russia's Lt. General Alexander Zorin said Sunday, the Russian news agency TASS said.

"I can tell you that in just an hour, repatriation trains carrying the bodies of military personnel will also begin to move," Russia's Lieutenant General Alexander Zorin said on Sunday, according to Russian state news agency TASS.

Ukraine and Russia agreed to the transfer of at least 6,000 bodies earlier this week during pe

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