The multi-billion dollar Nord Stream 1 and 2 pipelines transporting gas under the Baltic Sea were ruptured by a series of blasts in the Swedish and Danish economic zones in September 2022, releasing vast amounts of methane into the air.
The blasts occurred seven months after Russia launched a full-scale invasion of Ukraine, which triggered a wide range of US and European Union economic and financial sanctions against Russia.
"The investigation has led the authorities to conclude that there was deliberate sabotage of the gas pipelines. However, the assessment is that there are not sufficient grounds to pursue a criminal case in Denmark," a Copenhagen police statement said.
Sweden earlier this month dropped its investigation into the explosions, saying it lacked jurisdiction in the case, but had handed uncovered evidence over to German investigators who have yet to publish any findings.
The Kremlin says the situation regarding probes into the Nord Stream blasts is "close to absurd". (AP PHOTO)
The German government is still "very interested" in getting to the bottom of the blasts that ruptured the Nord Stream pipelines, a representative said in Berlin on Monday.
Last year, Germany told the United Nations Security Council it had found traces of subsea explosives on a sailing yacht that may have been used to transport the explosives, and that trained divers might have attached the explosives to the pipelines.
Denmark's decision to close the investigation was expected, Kenneth Øhlenschlæger Buhl of the Royal Danish Defence College told the Associated Press.
"The Swedes said they had a fairly good idea of who was behind it but have no jurisdiction over those they wanted to talk to," Øhlenschlæger Buhl said.
The Danish authorities are saying "the same, just slightly different words".
"I believe that the Germans cannot reach any other conclusion," he said.
"They may open the lid a little more, but not much."
Russia and NATO, at loggerheads over Russia's February 2022 invasion of Ukraine, have pointed fingers at one another over the pipeline blasts.
Each has denied any involvement and no one has taken responsibility.
The Kremlin on Monday said the situation regarding the investigations was "close to absurd".
"On the one hand, there is recognition of deliberate sabotage, on the other hand, there is no further progress," Kremlin spokesman Dmitry Peskov said, adding Denmark had refused requests to provide information about its investigation.
"The situation is so obvious that one can only express absolute astonishment," he said.
The Danish prime minister's office did not immediately respond to a Reuters request for comment on Peskov's assertion.
Danish police said they had been co-operating with relevant foreign partners and that the investigation they had conducted had been "both complex and comprehensive".
A police representative declined to comment when asked by Reuters to elaborate on why there were insufficient grounds for continuing the investigation and on which authorities they had shared their findings with.
Danish police had previously said the pipelines were hit by powerful explosions and Swedish investigators confirmed that traces of explosives found on site conclusively showed that sabotage had occurred.
Russia has blamed the United States, the United Kingdom and Ukraine for the blasts, which largely cut Russian gas off from the lucrative European market.
Those countries have denied involvement.
Some US and European officials have said Russian naval vessels were in the area at the time of the blasts.
Others have said there is no hard evidence to implicate Russia, which called the suggestion it was behind the attacks "absurd".
with AP
