Investigators found traces of explosives at the site of the damaged Nord Stream pipeline, confirming sabotage, a Swedish prosecutor said on Friday.
Authorities in Sweden and Denmark are investigating four leaks on the Nord Stream 1 and 2 pipelines linking Russia and Germany via the Baltic Sea that have sparked the crisis in Ukraine.
Denmark said last month that initial investigations showed the leak was caused by a powerful explosion.
“The analysis carried out now shows that there were traces of explosives on several of the items recovered,” Swedish prosecutors said in a statement.
“The investigation is complex and comprehensive. The ongoing investigation will determine whether any suspects can be identified,” it added.
The prosecutor’s office declined further comment.