The European Union says damage to two major gas pipelines connecting Russia to Europe was caused by sabotage. Leaks were discovered on the Nord Stream 1 and 2 pipelines after the lines sustained what has been described as “unprecedented” damage in three sections. Seismologists in Sweden say they have detected two explosions in the area that might have caused the damage. On Tuesday, Polish Foreign Minister Zbigniew Rau suggested Russia may have attacked the pipeline.

Zbigniew Rau: “We are not in a position to reject the notion that this could be an element of Russian hybrid war against NATO.”

Meanwhile, Poland’s former Foreign Minister Radek Sikorski appeared to suggest that the United States could have been involved. He posted a picture on Twitter of a water disturbance near the site of the leaks with a message that read “Thank you, USA.”