Sweden’s prosecutor’s office said Friday that an investigation into gas leaks from two underwater pipelines connecting Russia to Germany found traces of explosives, confirming that it is a case of “serious sabotage.”
Swedish and Danish investigators are investigating a flurry of detonations on the Nord Stream 1 and 2 pipelines on Sept. 26 that sent gas spewing to the surface of the Baltic Sea.
The explosions triggered four gas leaks at four locations: two in Denmark’s exclusive economic zone and two in Sweden’s exclusive economic zone.
The Swedish Prosecution Authority said in a statement that “residues of explosives have been identified on several of the foreign objects seized,” according to a translation.
It added that work continues “in order to be able to draw safe conclusions about the incident,” noting that the investigation is “extensive and complex.”
“The continued preliminary investigation must show whether someone can be served with suspicion and later prosecuted,” it said.
Many in Europe suspect the Nord Stream gas leaks were the result of an attack, particularly as it occurred during a bitter energy standoff between the European Union and Russia.
The Kremlin has repeatedly dismissed claims it destroyed the pipelines.