In Poland, the disruption of the Nord Stream lines was called an act of sabotage

It is reported by TASS. 

“We do not yet know the details of what happened, but we clearly see that this is an act of sabotage,” he said.

The Polish prime minister also believes that what happened probably "means another escalation of the situation in Ukraine."

Earlier, European Commission spokesman Tim McPhee said that the commission was studying the possible consequences of leaks on both branches of Nord Stream for shipping and the environment.