Ukraine has accused Russia of causing leaks in two major gas pipelines to Europe in what it described as a “terrorist attack”.
Ukrainian presidential adviser Mykhaylo Podolyak said the damage to Nord Stream 1 and 2 was an act of aggression towards the EU.
He added that Russia wanted to cause pre-winter panic and urged the EU to increase military support for Ukraine.
Seismologists reported underwater blasts before the leaks emerged.
The operators of Nord Stream 2 warned of a loss of pressure in the pipeline on Monday afternoon.
That led to a warning from Danish authorities that ships should avoid the area near the island of Bornholm