"Russia now promotes a conspiracy theory that it was allegedly a missile of Ukrainian air defense that fell on the territory of Poland. Which is not true. No one should buy Russian propaganda or amplify its messages," Foreign Minister Dmytro Kuleba said on Twitter.

The Russian-appointed head of the Donetsk region of Ukraine, which is controlled by Russian forces, earlier described reports that a Russian missile had landed in Poland as a "provocation" orchestrated by Kyiv.

"The situation with Poland is just a provocation, an attempt by the Kyiv regime to draw additional forces into the conflict," Denis Pushilin said on social media.