Several leaks were detected earlier this week on the Nord Stream 1 and 2 gas pipelines in the Baltic Sea near Denmark and Sweden, an incident reportedly being investigated as potential sabotage.
The Swedish Coast Guard has reportedly found a fourth leak on the Nord Stream pipeline.
Swedish Coast Guard reported it had located the leak after two pipelines running from Russia to Germany were damaged if three places on Monday.
The suspected sabotage against the gas pipelines in the Baltic Sea was likely premeditated attacks using underwater explosive devices detonated remotely; a British defense source told Sky News.
The source said mines could have been lowered to the seabed on a long line, dropped over the side of a boat, or placed next to the Nord Stream pipelines with underwater drones months or even years ago.
Gas has spewed into the Baltic Sea for three days since the leak was first detected.
Sweden's national seismology center previously said stations recorded "powerful subsea blasts" in the area the leaks occurred.
Bjorn Lund, a seismologist with Uppsala University who is part of Sweden's national seismic network, told the national broadcaster SVT: "There is no doubt that these were explosions."
Kremlin spokesman on Wednesday called it "stupid and absurd" to allege that Russia was involved in leaks in the Nord Stream 1 and 2 gas pipelines.
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