"I understand that there was some kind of technological malfunction, but it seems to have already been restored," Novak said at the Russian Energy Week.
Polish operator of the Druzhba pipeline PERN said earlier in the day that a leak was detected on one of the two strings of the Druzhba oil pipeline in Poland. The cause of the incident is yet to be determined. The pipeline is the main route for oil supplies to Germany.
At the same time, Serbian Mining and Energy Minister Zorana Mihajlovic said that Belgrade believed the leak to be a part of an energy war, saying it looks like a continuation of what happened on the Nord Stream gas pipeline.