The boat, a white yacht named Andromeda, allegedly deviated from its route and entered Polish waters when the blasting of the pipelines occurred in September last year, according to information obtained from satellite and navigation equipment, among other things.
The German investigation team also reportedly took part of data from mobile phones and computers as well as DNA traces on board. Police have previously confirmed that remnants of "military-grade" explosives were found inside the boat that matches what was used at the pipelines, according to the Washinton Post.
Leaked documents from the CIA
Theories about who is behind the blast have spread. This week, reports emerged that a Ukrainian special forces unit allegedly planned the attack, according to the Washington Post, citing leaks from the US CIA. The documents show that the United States had information about a planned attack on the pipelines three months before it occurred.
Ukrainian President Volodymyr Zelenskyy denied reports that Ukraine carried out the attack.
"Kyiv has not known anything of any plans to blow up the Nord Stream gas pipelines," Zelenskyy said on Wednesday.
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60 seconds: The blasts against the Nord Stream pipelines outside Bornholm. Photo: SVT, TT