European security officials on Monday and Tuesday observed Russian navy supply ships near areas of leaks in the Nord Stream pipeline that were likely caused by underwater explosions.
This was reported by CNN with reference to two Western intelligence officers and another source familiar with the matter.
They said it was unclear whether the ships had anything to do with the explosions, but it was one of many factors that investigators would look into.
Russian submarines were also spotted last week near the area where the sabotage took place, an intelligence official said.
Three U.S. officials said the U.S. still did not have a full explanation of what happened, days after the explosions that appeared to have caused four separate and simultaneous leaks at two pipelines on Monday.
According to one Danish military official, Russian ships regularly operate in the area. He emphasized that the presence of ships does not necessarily indicate that Russia has caused damage.
At the same time, Russia is drawing the most attention from both European and American officials as the only player in the region believed to have both the ability and the motivation to deliberately damage pipelines.
US officials declined to comment on intelligence about the ships on Wednesday.
Both Denmark and Sweden are investigating, but an examination of the scene has not yet been completed and details about what exactly caused the explosions remain unclear. One European official said an assessment by the Danish government was underway and it could take up to two weeks for an investigation to properly begin as pressure in the pipes made it difficult to get close to the leak - although another source familiar with the matter said sounding could begin . already on sunday
The prime ministers of Denmark and Sweden said publicly on Tuesday that the leaks were likely the result of deliberate actions rather than accidents, and Sweden's security service said on Wednesday that a foreign power could not be ruled out. US National Security Adviser Jake Sullivan also called the leak "obvious sabotage" on Tuesday night.
As you know, there was a gas leak at the "Northern Stream-1" and "Northern Stream-2" gas pipelines at the beginning of the week. It is assumed that this could have happened due to the undermining of pipelines.
Germany suspects that the gas leak on the branches of the Russian Nord Stream gas pipelines in the Baltic Sea is the result of deliberate actions.
At the same time, the Russian Federation began to investigate the incidents as an "act of international terrorism."