Ukrainian experts are already working at the location where a missile killed two people in the border area of southeastern Poland, Ukrainian Foreign Minister Dmytro Kuleba said on November 18.
Kuleba tweeted that Ukraine would continue "open and constructive" cooperation with Poland over the November 15 incident.
NATO member Poland and its Western allies say evidence from the site indicates that the explosion was caused by a Ukrainian air defense missile that went astray in pursuit of an enemy missile during one of the heaviest waves of Russian air attacks on Ukraine.
Kyiv disagrees with the NATO allies' conclusion, saying it has evidence of a "Russian trace" in the blast.
"Ukrainian experts are already working at the site of the tragedy in Przewodow caused by Russian missile terror against Ukraine," Kuleba wrote.
"I am grateful to the Polish side for granting (the experts) access. We will continue our cooperation in an open and constructive manner, as closest friends do."
U.S. President Joe Biden on November 17 disputed Ukraine's account that missiles that landed in Poland were not of Ukrainian origin.
"That's not the evidence," Biden told reporters at the White House upon returning from a trip to Asia.
Biden’s statement followed comments by NATO chief Jens Stoltenberg and Poland that the November 15 blast in Polish territory was likely caused by a Ukrainian air defense missile.
Nevertheless, Stoltenberg said that Russia, not Ukraine, was still to blame for starting the war with its February invasion.
