ISTANBUL 

US President Donald Trump on Friday said a "major prisoners swap" between Russia and Ukraine was "just completed."

"A major prisoners swap was just completed between Russia and Ukraine. It will go into effect shortly. Congratulations to both sides on this negotiation," the US president posted on Truth Social. "This could lead to something big???"

There was no immediate comment from Kyiv or Moscow, but the two sides had reached an agreement on exchanging 1,000 prisoners of war each during direct talks held in Istanbul last week.