Miners have flocked to Russia, in part to take advantage of low-cost power from natural gas and hydropower dams, that have made it a popular destination besides North America after Beijing’s crypto mining ban last May forced them out of China.

But in April, the U.S. Treasury Department imposed sanctions on Switzerland-based crypto mining company BitRiver, targeting one of the industry’s largest data-center service providers over its operations in Russia. Shortly after, America’s Compass Mining Inc. sought to liquidate $30 million in hardware in Siberia to avoid sanctions.

SBI Holdings, which has been quicker than most Japanese financial firms in expanding into digital currencies, suspended mining in Siberia soon after the war began, according to the spokesman.

SBI has yet to decide by when it will complete the withdrawal from Siberia, the spokesman said. The company has no other crypto business in Russia,