Germany, Denmark and Poland have warned that the mysterious leaks on two Russian gas pipelines Nord Stream 1 and 2 in the Baltic Sea could not be accidental. Officials suggested that the damage could be a result of a sabotage operation led by Russia. This video shows the Nord Stream 2 Terminal in Lubmin, Germany, on September 25. An investigation into the leaks is underway. Ukraine has also accused Russia of sabotaging the pipelines but the European Commission said that it is premature to speculate. Before the leaks took place, seismologists recorded underwater explosions.