Denmark on Thursday lifted navigational restrictions in waters near the Nord Stream gas pipeline under the Baltic Sea, saying they no longer pose a danger to ships in the area, Reuters reported.

The restrictions were lifted by the Danish Maritime Authority (DMA) on the recommendation of the Danish Energy Agency.

But the DMA said it still does not recommend vessels dock, fish or conduct seabed operations within one nautical mile (1.85 kilometers) of the pipelines due to “underwater obstructions”.

A series of explosions that ruptured the Nord Stream 1 and 2 gas pipelines at the bottom of the Baltic Sea last September released large amounts of natural gas into the water and then into the atmosphere.

The explosions occurred in the exclusive economic zones of Sweden and Denmark, and both countries have launched investigations to determine their causes.

While all stakeholders have accused the act of sabotage, the actors behind it remain one of the biggest mysteries since the beginning of the Russian invasion of Ukraine.

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