Here is link with a good video clip from the German News Service (DW): https://www.dw.com/en/denmark-views-nord-stream-pipeline-leaks-as-deliberate-actions/a-63251217
They say it was sabotage. No Fly Zone established by Denmark. No maritime traffic allowed near the leaks.
Both of Nord Stream 1’s two lines are affected, while one of Nord Stream 2’s pipelines showed a drop in pressure.