The maintenance of the only operable turbine of the Nord Stream 1 gas pipeline revealed deficiencies. Until they are removed, the gas pipeline will remain out of service. This was stated by the Russian gas company Gazprom. She did not specify when supplies through this gas pipeline could be restored. Nord Stream 1 transports gas from Russia to Germany along the bottom of the Baltic Sea and is the main route for Russian gas supplies to the European Union. On Wednesday, Russia already interrupted supplies through the Nord Stream 1 gas pipeline for maintenance work. According to the original information, the shutdown was supposed to end on Saturday morning. But Gazprom said on Friday that maintenance carried out together with representatives of the German company Siemens Energy revealed an oil leak in the Portovaya compressor station, making it impossible to ensure safe operation. He added that he had sent a letter to the head of Siemens Energy about the identified deficiencies and the need to eliminate them. The situation surrounding Russian gas supplies became complicated when Russia launched an attack on Ukraine in February and the European Union adopted a series of anti-Russian sanctions in retaliation. In June, Moscow reduced supplies through the Nord Stream 1 gas pipeline to 40 percent of capacity, and in July to 20 percent. She cited maintenance problems caused by the sanctions. But the European Union says the technical problems are just a pretext and that Moscow is using the gas as a weapon to advance its interests. Uncertainty about supplies from Russia raises concerns about gas shortages in Europe in the winter months. This led to a significant increase in European gas and electricity prices. The European Union is now considering various measures in an attempt to limit the growth of energy costs, which has negative effects on the EU economy.