Poland will introduce restrictions on the movement of Russian diplomats on its territory due to Moscow's involvement in what it deems a hybrid war against the European Union, Foreign Minister Radoslaw Sikorski said on Monday.

Relations between Poland and Russia have deteriorated sharply since Moscow sent tens of thousands of troops into neighbouring Ukraine in February 2022. Warsaw has also accused Moscow of spying and sabotage.

"These are national decisions, but we have evidence that the Russian state is involved in authorizing sabotage in our country as well. We hope that the Russian Federation will treat this as a very serious warning," Radoslaw Sikorski told journalists in Brussels.

The Russian embassy in Warsaw said it could not immediately comment as it had not received official information on the measures.

Sikorski said the embassy would receive a note on the matter soon and that the restriction would apply to all embassy and consulates' personnel except for the ambassador.

They will be allowed to travel only within the province where they are assigned.