WARSAW: Poland’s prime minister said on Tuesday that its security agency had detained a “Belarusian agent,” adding that the EU member would also expel a Belarusian diplomat for “supporting aggressive activity” against Poland.

Since Russia invaded Ukraine in 2022, relations between Poland, one of Kyiv’s main supporters in the European Union, and neighboring Belarus, a Moscow ally, have sunk to a low.

Besides their tense relations over the Ukraine conflict, Poland also accuses Belarus of arranging for a wave of asylum seekers from third countries to cross the border into Poland, in what Warsaw says is a bid to destabilize the EU.

Poland’s ABW internal security agency “detained a Belarusian agent yesterday. The detention was the result of cooperation between the (intelligence) services of Romania and the Czech Republic among others,” Polish Prime Minister Donald Tusk said on X.

Polish Interior Minister Tomasz Siemoniak identified the Belarusian agent as Uladzislau N.