Andreas Szakacs, a Swedish national who also used the name Emre Avci, was arrested in Istanbul for his role in a $4 billion cryptocurrency scam through the OmegaPro Ponzi scheme. The scam, which defrauded thousands of investors globally, operated by using funds from new investors to pay returns to earlier ones. The arrest was made after a tip-off and testimonies from victims, including a Dutch representative for 3,000 defrauded investors. Another key associate of Szakacs is still at large.