Material allegedly detailing the involvement of President Alexander Lukashenko in the forcible transfer of children from Ukraine to Belarussays it provided the International Criminal Court with a Belarusian opposition activist, as reported by Associated Press. Minsk denies the accusations.

Lukashenko has been Moscow’s closest allyallowing the Kremlin to use Belarusian territory to send troops and weapons into Ukraine, welcoming the continued Russian military presence in Belarus and the deployment of some of Russia’s tactical nuclear weapons there.

The president of Belarus also agreed to a plan “Union State” which led Moscow and Minsk to tighten their economic, political and defense ties, while so far they have not progressed to a full merger.

Pavel Latuska, the former culture minister of Belarus, said on Tuesday that materials he handed over to the ICC show that more than 2,100 Ukrainian children, from at least 15 Russian-occupied Ukrainian cities, were forcibly taken to Belarus with Lukashenko’s approval.

THE Lettuce expressed the hope that the materials will lead to the issuance of a warrant by the ICC and the arrest of Lukashenko, as happened with Russian President Vladimir Putin. The court’s prosecutor’s office on Wednesday did not immediately confirm receipt of the materials described by Latuska.

In March, the ICC issued warrants for both Putin and his children’s rights commissioner, Maria Lvova-Belova. Judges in The Hague said they found “reasonable grounds to believe” the two were responsible for the war crimes of illegally deporting children and illegally transporting children from the occupied territories of Ukraine to Russia. Moscow angrily rejected the move.

“The children of Ukrainewho were under the guardianship of the Ukrainian state, including orphans, children with disabilities and those whose parental rights were taken away by their parents, were illegally transported to the territory of Belarus”Latuska told The Associated Press.

“The materials handed over to the prosecutors prove that Lukashenko personally signed the documents under the auspices of the so-called “union state” of Russia and Belarus who provided the basis for organizing and financing the transportation of children from Ukraine to Belarus,” he added.

In an online statement published on Tuesday, Latuska’s National Anti-Lukashenko Management Group claims to have gathered evidence that Ukrainian children were placed in five summer camps and health resorts in Belarus.