Russia halted gas supply to Finland, Russia’s gas giant Gazprom confirmed on Saturday.
Finland said all the deliveries had stopped, but added there would be no disruption to customers.
Helsinki has been refusing to pay for its supplies in roubles. But the cut-off also follows an announcement that Finland will apply for Nato membership, the BBC reported.
Despite its invasion of Ukraine on 24 February, Russia continues to supply gas to many European countries.
After Western powers sanctioned Russia over the war, Russia said “unfriendly” countries must pay for gas using the Russian currency, a move the EU considers blackmail.
Finland imports most of its gas from Russia but gas accounts for less than a tenth of the country’s energy consumption.