Moscow has handed over a list of 640 names for the exchange, but Kiev has yet to set a date for the trade, the Defense Ministry has said

Kiev has postponed a previously agreed prisoner swap with Moscow, according to Russian Lt. Gen. Alexander Zorin, speaking for the Defense Ministry. The trade would also include the repatriation of over 6,000 bodies of deceased Ukrainian soldiers, he added in a statement published on Saturday.

"Russia handed over to the Ukrainian side a list of 640 names, but the latter is so far refraining from setting a date for the return of these individuals," said Zorin, who was a member of Moscow's negotiating team in Istanbul. He explained that the exchange agreement covers two groups of prisoners - an "all-for-all" swap of wounded and critically ill, and those under 25 years old.

According to Zorin, Moscow began the repatriation on Friday, with a convoy containing 1,212 bodies reaching the exchange point. He added that four other convoys, each carrying 1,200 sets of remains, are ready for transfer.

Russia decided to return the remains of over 6,000 slain Ukrainian soldiers in a unilateral humanitarian gesture during the talks in Istanbul on Monday. Both sides also agreed to exchange 1,200 prisoners each.

"We confirm our full readiness to implement the Istanbul agreements. We are prepared to transfer all bodies and proceed with the prisoner exchange as agreed," Zorin stressed.

Earlier on Saturday, Moscow's lead negotiator in the peace talks with Kiev, Vladimir Medinsky, also claimed that Ukraine would not accept the bodies of its fallen troops, and had given "strange reasons" for its decision. According to Medinsky, the Ukrainian team "did not even arrive at the exchange site."

"We call on Kiev to strictly adhere to the schedule and all agreements that were reached, and to immediately begin the exchange" so that the wounded can return home and the dead receive a proper burial, he urged.

The Ukrainian side has denied Russia's claims, stating that over the past week, teams from both sides have been working on the repatriation of bodies and the exchange of prisoners. "Unfortunately, instead of a constructive dialogue, we are once again faced with manipulation and attempts to use sensitive humanitarian topics for informational purposes," Ukraine's Coordination Headquarters for the Treatment of Prisoners of War said in a statement on Sunday.