The explosions that damaged the Nord Stream 1 and Nord Stream 2 pipelines in September were caused by "gross sabotage," Swedish prosecutor Mats Ljungqvist said, Politico reports.

According to him, "traces of explosives on several of the foreign objects" were found during the investigation.

According to the German government, the blasts probably derailed the energy infrastructure.

Swedish authorities refrained from naming a suspect. "Advanced analysis work continues so that we can draw more reliable conclusions about the case," Ljungqvist said.

Data from the Swedish investigation on the discovery of traces of explosives confirm Russia's position Presidential spokesman Dmitry Peskov said, RBC reports.

"The very fact that the data began to arrive in favor of confirming a sabotage - or a terrorist act, it can be called anything, - this once again confirms the information that was and is available to the Russian side," said the Kremlin spokesman. It is necessary to wait for a full assessment of the damage they have received to get data on pipeline restoration, Peskov pointed out, urging to "be patient and wait for information" from experts.