Russia’s main gas pipeline to Europe will not reopen as planned on Saturday, adding to concerns about energy supplies this winter.
State energy firm Gazprom said it found a leak on Nord Stream 1, meaning it could be closed indefinitely.
The pipeline, which runs to Germany, has been shut for three days for what Gazprom described as maintenance work.
Europe accused Russia of using its gas supplies to blackmail Europe amid the Ukraine conflict, which Moscow denies.
Energy prices have soared since Russia invaded Ukraine and scarce supplies could push up costs even further.
There are growing fears families in the EU will be unable to afford the cost of heating this winter.
The UK could also be affected. Although not reliant on Nord Stream 1 for its gas, the pipeline suspension could drive up the cost of wholesale gas, which has been behind the spiralling rise in the energy price cap.
Faisal Islam, the BBC’s economics editor, described the indefinite closure of Nord Stream 1 as a…