Russian energy company Gazprom has reduced gas exports following a fire at a processing plant near the western Siberian city of Novy Urengoy.
The transport to the West via Belarus and Poland has already been halved to 1 million cubic metres per day, according to Russian media reports on Friday.
By contrast, the previous quantities have been transported via the Nord Stream 1 Baltic Sea pipeline and Ukraine.
The Russian gas monopoly had already planned lower transport volumes via the Yamal-Europe gas pipeline for the fourth quarter of this year. This pipeline runs from the Yamal Peninsula via Belarus to Germany.
No one was injured in the fire on Thursday that occurred 23 kilometres from Novy Urengoy, the authorities said.
The causes of the fire are being investigated.
According to earlier information from the company, the affected gas-processing plant is to be replaced in the coming years. Experts therefore assume that the company will not repair the damaged facilities.