German investigators are looking into evidence that a group of saboteurs used Poland as a base to attack the Nord Stream gas pipelines in September, according to information provided by the Wall Street Journal.

The American newspaper quoted by Sky News reports that investigators have reconstructed the two-week voyage of the Andromeda pleasure yacht, which is suspected of being involved in the incident.

The WSJ says they have determined that the yacht deviated from its target and sailed into Polish waters.

It cited data from the ship’s radio and navigation equipment, as well as mobile and satellite phones, Gmail accounts and “DNA samples left on board that Germany tried to match with those of a Ukrainian soldier.”

Germany’s federal criminal police and the Polish prime minister’s office did not immediately respond to requests for comment.

This comes after the Washington Post reported earlier this week that US intelligence had become aware of a Ukrainian plot to attack the pipelines three months before they were damaged.

Last June, through the European spy agency, the CIA learned that a six-person Ukrainian special forces team was planning to blow up Nord Stream, the publication reports.

The intelligence report is based on information provided by a person in Ukraine, the Washington Post reported, adding that the CIA shared it with Germany and other European countries in June 2022.

WP reported that officials from several countries confirmed that the intelligence posted on Discord contained exactly what the European agency had told the CIA.

Volodymyr Zelenskyi denies Kyiv’s involvement in sabotage.

The explosions occurred in the economic zones of Sweden and Denmark. Both countries said the blasts were deliberate, but it has not yet been determined who was responsible. These countries and Germany are investigating.

Washington and NATO called the incident “an act of sabotage”. Moscow blamed the West, accusing investigators of trying to cover up who was behind the attack.