Russia has cut the supply of gas through the Nord Stream 1 pipeline to Europe.
The pipeline, operated by the Russian state-owned energy company Gazprom, cited the pipeline would be out of action for three days due to maintenance.
Gas supply from Russia through the pipeline has already been reduced, and there are concerns the recent move by Moscow is in retaliation for Western sanctions imposed after the invasion of Ukraine.
Wholesale gas prices across Europe have risen nearly 400 per cent in the last year.
