Copenhagen police concluded investigations into the Nord Stream 1 and 2 pipeline explosions from 2022 on Monday. Although the police concluded that there was “deliberate sabotage,” they declared that there were insufficient grounds to pursue a criminal case in connection with the incidents. The police also clarified that they would not provide further comments on the investigation.

Earlier in February, Swedish prosecutors also announced they dropped their investigation into the explosions, concluding that Sweden did not have jurisdiction. Germany is still conducting its own investigation.

Dmitry Peskov, Kremlin spokesperson, called the termination of the investigation “dumbfounding, bordering on the absurd,” according to the Russian state-owned news agency TASS. He stressed that Russia would continue its own investigation into the pipeline’s possible sabotage.

The Washington Post reported in November that Ukrainian colonel Roman Chervinsky coordinated the attacks on the Nord Stream pipeline and that the Biden administration was aware of the plot. Chervinsky’s attorney denied Chervinsky’s involvement in the attack on the pipeline. A proposal by Russia for an independent, international investigation failed to pass in the UN Security Council.

The Nord Stream pipeline is a natural gas pipeline connecting Vyborg, Russia, to Greifswald, Germany. In September 2022, roughly seven months after Russia began its invasion of Ukraine, Nord AG registered a pressure drop in the natural gas pipeline, which was later determined to be from a rupture in the pipeline.