“Swedish broadcaster SVT reported that the Swedish National Seismic Network detected two underwater explosions near the Nord Stream pipeline system on Monday.”

"One of the explosions had a magnitude of 2.3, and was registered at as many as 30 measuring stations in southern Sweden," SVT said. 

https://www.zerohedge.com/commodities/damage-nord-stream-pipelines-unprecedented-may-have-been-sabotaged