Officials in Ukraine said Russia has provided no credible evidence to back its claims that Ukrainian forces shot down a military transport plane that Moscow says was carrying Ukrainian prisoners of war who were to be swapped for Russian POWs.

The Ukrainian agency that deals with prisoner exchanges said late Friday that Russian officials had “with great delay” provided it with a list of the 65 Ukrainians who Moscow said had died in the plane crash in Russia’s Belgorod region on Wednesday.

Ukraine’s Coordination Staff for the Treatment of Prisoners of War said relatives of the named POWs were unable to identify their loved ones in crash site photos provided by Russian authorities. The agency’s update cited Ukraine’s military intelligence chief, Lt. Col. Kyrylo Budanov, as saying that Kyiv had no verifiable information about who was on the plane.