German prosecutor arrests head of Wirecard's Dubai unit

German prosecutors said on Monday they had arrested the head of a Dubai-based subsidiary of Wirecard , widening the circle of suspects in a multi-billion-dollar fraud investigation into the collapse of the payments company.The Munich prosecutor's office said in a statement it had questioned the chief executive of Cardsystems Middle East FZ-LLC earlier in the day and arrested him on the basis of a warrant.The executive had travelled from Dubai and turned himself in, prosecutors said, without nami