Denmark's armed forces released a video showing gas bubbles rising to the surface of the Baltic Sea above Nord Stream 1 and Nord Stream 2.

This is the largest gas leak to cause a surface disturbance over 1 kilometer in diameter.

Danish and Swedish authorities said they had detected two leaks of blue fuel from the Nord Stream 1 gas pipeline, which runs along the bottom of the Baltic Sea, connecting Russia and Germany. 

Nord Stream 2 gas leak in Baltic Sea, pipeline pressure drops

Two underwater explosions, "most likely caused by detonations", were detected near the locations of the leaks from the Nord Stream 1 and 2 gas pipelines shortly before they were registered, the Swedish Seismological Institute announced, quoted by BTA.

The first "massive release of energy" with a magnitude of 1.9 was recorded overnight Monday at 02:03 (00:03 GMT) southeast of the Danish island of Bornholm, and the second with a magnitude of 2.3. at 19:04 (17:04 GMT) yesterday evening to the northeast of it, Peter Schmidt of Sweden's National Seismological Network told AFP.

"Our interpretation is that they are very likely the result of some type of detonation," he added.

The independent Norwegian seismological institute Norsar also confirmed it had recorded a "small explosion" yesterday morning and another "more powerful" one last night, which it suspected were deliberate.

"This is a serious explosion. I tend to think that it was the work of someone who knew what he was doing," institute director Anne Ströme Licke told AFP.

"Few things, other than an explosion, can cause such serious releases of energy," emphasized Schmidt, for his part.

The tremors were "very sudden", notes the seismologist from the Swedish University in the city of Uppsala.

The three large leaks detected since yesterday off the coast of the Danish island of Bornholm are visible on the surface, as pictures from the Danish military show gas gushing out over an area between 200m and 1km in diameter. 

The unexplained leaks are the result of a "planned terrorist attack" by Moscow "against the European Union", Kyiv said today, amid growing suspicions of sabotage.

The Kremlin said it was "extremely concerned" by the reported leaks on the Nord Stream 1 and 2 gas pipelines, saying that "no" hypothesis should be ruled out, including sabotage.

Earlier today, it was reported that a Bornholm seismograph recorded a two-fold increase in seismic activity representing ground tremors.

This happened yesterday, on the day when a drastic drop in the pressure of the Nord Stream 1 and Nord Stream 2 gas pipelines was also detected, the Geophysical Institute of the Federal Republic of Germany announced.

The Danish military published footage from the site of the leak on Nord Stream.

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— NEXTA (@nexta_tv) September 27, 2022

Nord Stream 2

gas leak

Nord Stream 1