Treasury designated Xinbi a transnational criminal organization as prosecutors moved against its crypto holdings.

The Justice Department’s Scam Center Strike Force, working with the Treasury Department, seized a Chinese-language scam marketplace called Xinbi Guarantee and restrained about $52 million in cryptocurrency in a single day, U.S. Attorney Jeanine Pirro announced this week. That operation brought the total the Strike Force has restrained since its founding to roughly $938 million.

A separate Strike Force team also spent the same stretch helping authorities in Madagascar take down 13 Chinese-run scam compounds, pushing the crackdown launched last November well…