Gazprom, the Kremlin-controlled company with a monopoly on Russian gas exports by pipeline, declined to comment.
"There are some indications that it is deliberate damage," said a European security source, while adding it was still too early to draw conclusions. "You have to ask: Who would profit?" A second European source, when asked if there was specific intelligence indicating sabotage, said: "Not specific yet, but it seems this pressure failure can only happen when a pipe is completely cut. Which pretty much says it all." Russia slashed gas supplies to Europe via Nord Stream 1 before suspending flows altogether in August, blaming Western sanctions for causing technical difficulties. European politicians say that was a pretext to stop supplying gas.