U.S. Army training arrest puts Cinkciarz.pl CEO Marcin Pióro in custody over Polish fraud probe affecting more than 5,000 alleged victims

Marcin Pióro, the CEO of Cinkciarz.pl, was arrested on May 19 at Fort Leonard Wood, Missouri, while completing basic training as a member of the Illinois National Guard. The case matters for high-risk payments because Polish prosecutors say it involves fraud and money laundering tied to a financial-services business, with losses that have kept rising as the investigation has expanded.

1. U.S. authorities said Pióro was wanted on an Interpol red notice and faced a formal extradition request from the Polish government. The arrest was carried out by U.S. Marshals together with the U.S. Army Criminal Investigation Division to avoid disrupting the training exercise and to keep the operation safe for everyone involved.
2. The detention took place inside a military facility, which is not exactly the usual way a cross-border financial crime suspect gets found. According to the authorities, the arrest was completed without incident.
3. Pióro appeared the next day, on May 20, before U.S. Magistrate Judge David P. Rush in the U.S. District Court for the Western District of Missouri, where he remained in custody while the judicial process moved forward.
4. In Poland, prosecutors accuse him of participating in a fraud and money-laundering scheme connected to Cinkciarz.pl, a company that provides currency exchange and other financial services. Investigators said the case has affected more than 5,000 alleged victims.
5. The reported losses have increased as the probe progressed. At first, authorities estimated damages at more than 125 million zlotys, or more than 30 million dollars. Military.com later reported that Polish prosecutors now estimate losses above 185 million zlotys, approximately 50 million dollars.

For PSPs, acquirers, and banking partners, the practical point is simple: a fintech or FX platform can move from ordinary commercial counterparty to extradition headline very quickly when regulators and prosecutors start treating the business as a fraud-and-AML matter.