U.S. investment bank Moelis & Co. has been retained by Wirecard AG officials and insolvency administrators to oversee the sale of the Wirecard North America business.

The Wirecard North America business announced earlier this month that it would pursue a sale, and the Financial Times reported that a number of U.S. companies, including Fiserv Inc., were exploring whether to pursue the business here.

German officials meanwhile have reportedly arrested a second Wirecard executive, the head of the company's Dubai-based unit.

Former CEO Markus Braun was arrested last month after he resigned in connection to an accounting scandal that resulted in auditors not being able to account for about $2.1 billion.