Ship circling around Baltic gas pipeline: Polish TV

The oil tanker Eagle S is suspected of disrupting the Finland-Estonia power cable. (AP PHOTO)

"A Russian 'shadow-fleet' vessel has circled over a stretch of a pipeline carrying Norwegian gas to Poland in the Baltic Sea," TVP World, the English-language channel of public broadcaster TVP, said on its website.

'Shadow fleet' refers to vessels used by Russia to move oil, arms and grains around in violation of international sanctions imposed on it over the Ukraine war. The vessels are not regulated or insured by conventional Western providers.

Gaz System, which operates the Polish section of the pipeline, had no immediate comment.

NATO Secretary General Mark Rutte, European Commission Vice-President Henna Virkkunen and leaders of NATO member countries bordering on the Baltic Sea are meeting in Helsinki in Tuesday to discuss strengthening NATO's presence on the sea.