Edward Zimbardi is facing US charges after being deported from Fiji, according to prosecutors, in a case tied to an alleged $165 million cryptocurrency Ponzi scheme. Authorities allege that he collected cryptocurrency from thousands of investors through the operation.

Prosecutors claim that more than $34 million was lost in currency trades. They also allege Zimbardi spent at least $10 million for personal purposes, raising questions about how investor assets were handled and whether funds were used as represented to participants.

A Ponzi scheme generally involves using money from newer participants to meet obligations to earlier participants rather than generating the promised returns through legitimate business activity. The allegations against Zimbardi remain accusations, and the US criminal process will determine whether prosecutors can prove the charges in court.