Sept. 30 (UPI) -- A Ukrainian man suspected of involvement in the 2022 explosion of Europe's Nord Stream pipeline in the Baltic Sea has been arrested by Polish police.

The unidentified Ukrainian national and trained diver with the alias "Volodymyr Z" was arrested early Tuesday morning near Warsaw, according to German authorities.

"He is currently being investigated for the execution of a European Arrest Warrant," Piotr Antoni Skiba, a spokesman for the Polish prosecutor in Warsaw, told the BBC.

On Tuesday, a legal representative for the Ukrainian diver confirmed the arrest to a Polish news outlet.

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