The Danish prime minister has said she “cannot rule out” sabotage after three leaks were detected on Russian natural gas pipelines running under the Baltic Sea to Europe.
Premier Mette Frederiksen spoke after simultaneous problems were reported with the Nord Stream 1 and 2 pipelines that were not bringing gas to Germany amid an energy standoff caused by Russia's invasion of Ukraine but were still filled with the fuel.
She spoke at the inauguration of a new pipeline with Norwegian gas meant to wean Poland and Europe off Russian supplies.
Officials said the leaks did not pose any threat to energy supplies and experts said the environmental impact would be limited.
Danish authorities announced on Monday that a leak was detected in the Nord Stream 2 pipeline, which has never been used.
They were later informed of a major pressure drop on Nord Stream 1, which until recently has been a key source of gas to Germany.
The Swedish Maritime Administration said on Tuesday that two leaks were discovered in the Nord Stream 1 pipeline, which partly runs in Swedish waters. Danish authorities also have confirmed the leaks.
The Danish Maritime Authority has issued a navigation warning and established a prohibited area with the aim of ensuring that ships do not sail near the leaks.
Ships may lose buoyancy if they sail into the area, and there may also be a risk of ignition above the water and in the air, the Danish authorities said. Swedish authorities sent out similar warnings.
The leaks in the pipelines have been detected northeast and southeast of the Danish island of Bornholm.
”Authorities and the government are following the situation closely,” Denmark’s Energy Minister Dan Jørgensen said, according to Danish media.
The German economy ministry said it was investigating the cause for the pressure drop in Nord Stream 1, and that "we currently do not know the reason for the drop in pressure.”
The pipelines have been at the centre of an energy war between Europe and Russia since the invasion of Ukraine in late February.
A drop in Russian gas supplies has caused energy prices to soar, causing pain for many across Europe and creating fears about the coming winter and putting pressure on governments to help ease the pain of sky-high bills of their citizens.
Across Europe, countries have been struggling to find other sources of gas, starting from different positions.
Poland, for example, was already on track when the war began to free itself of Russian gas after working for years to find other sources, including imports of liquefied natural gas, or LNG, from the United States and the Middle East.
Germany, in contrast, is only now struggling to quickly build LNG terminals.
A prominent project in the bid for energy security is the Baltic Pipe, a pipeline bringing Norwegian gas through Denmark and along the Baltic Sea to Poland.
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Of the two pipelines hit by leaks, Nord Stream 2 has never operated, while Nord Stream 1 carried gas to Germany until this month, when Russian energy giant Gazprom cut off the supply, claiming there was a need for urgent maintenance work.
Gazprom's explanation of technical problems have been rejected by German officials as a cover for a political power play to raise prices and spread uncertainty.
Nord Stream 2 was already complete when German Chancellor Olaf Scholz suspended its certification on the eve of Russia’s invasion of Ukraine.
Germany has been heavily reliant on natural gas supplies from Russia, but Berlin has been trying to look for other sources of energy.
Despite fears of a winter shortage, gas storage has progressed in recent weeks in Germany and other parts of Europe.
“We do not see any impact on the security of supply,” the German economy ministry said, referring to the pressure drop in Nord Stream 1.
“Since the Russian supply stopped at the beginning of September, no gas has flowed through Nord Stream 1 anymore. Storage levels continue to rise steadily. They are currently at about 91%.”