Japan’s top refiners are reportedly set to cut their ties with Russian crude after calls for the country to step up sanctions following the invasion of Ukraine.

Eneos Holdings, Japan’s biggest refiner, has not signed new contracts for Russian crude since the war began, chief executive Tsutomu Sugimori told Bloomberg.

Its closest domestic rival, Idemitsu Kosan, also told the news agency that it will not strike new deals for Russian oil.