Warsaw: Repairs have begun on a pipeline carrying Russian oil to Germany and Poland does not believe the incident was sabotage, the top Polish energy security official said on Thursday.

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After Moscow's invasion of Ukraine, Europe was on high alert for any potential energy security threats. This led to the detection of a leak in the primary pipeline carrying oil to Germany, which operator PERN said was detected on Tuesday evening.

An examination of the natural cause, physical fatigue, and of course the fractured section, all that point. In light of this, the Secretary of State in charge of strategic energy infrastructure, Mateusz Berger, said that so far, there is no information that could indicate sabotage.

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According to Berger, there is a "relatively large" fracture along the Druzhba pipeline that caused the leak, and repairs have already begun. He declined to provide further details.

PERN announced late Wednesday that it had found the source o      f the leak and that the preliminary investigation found no evidence of outside interference.

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Polish Prime Minister Mateusz Morawiecki said on public radio on Wednesday that it was still too early to determine whether the leak was caused by sabotage or accidental damage.