The Danish Energy Agency (DEA) said on Sunday that the pressure is now stable in the two ruptured Nord Stream 1 pipelines, and gas leaks have stopped.

Also on Sunday, Russian Deputy Prime Minister Alexander Novak said that it was technically possible to restore the ruptured offshore infrastructure of the Nord Stream gas pipelines, TASS news agency reported.

"There have never been such incidents. Of course, there are technical possibilities to restore the infrastructure, it takes time and appropriate funds. I am sure that appropriate possibilities will be found," he said.

Earlier on Saturday, DEA said on Twitter that it had been informed by the company operating the Nord Stream 2 pipeline that the pressure appears to have stabilized in the pipeline, which runs from Russia to Germany.

"This indicates that the leaking of gas in this pipeline has ceased," the DEA said.

According to Ulrich Lissek, a spokesperson for the operator of the Nord Stream 2 pipeline, gas is no longer flowing out of the Nord Stream 2 pipeline following a leak this week that spewed tonnes of methane into the Baltic Sea.

"This can mean two things," said the spokesperson, "either the pipeline is completely empty or the pressure of the gas in the pipeline and of the water outside have reached an equilibrium."

A total of four leaks were discovered last week on the Nord Stream 1 and 2 pipelines in the Baltic Sea near Denmark and Sweden, with a significant fall in gas pressure leading to the detection of the ruptures.

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Nord Stream gas leaks to continue until end of week: DEA

The European Union states say they believe the damage was caused by sabotage, but they and other Western governments have avoided pointing a finger directly.

Earlier on Friday Russian President Vladimir Putin said the United States and its allies blew up Nord Stream. "The sanctions were not enough for the Anglo-Saxons: they moved onto sabotage," he said. The United States and other countries have imposed several rounds of sanctions against Russia since Russia started its special military operation in Ukraine in late February.

The White House has dismissed the accusation it was responsible.

"Let me be clear, the United States categorically denies any involvement in this incident and we reject an assertion saying the contrary," Richard Mills, the U.S. deputy representative to the United Nations, said at the meeting.

(With input from agencies)