Worldline’s Woes Deepen as Belgium Opens Probe Into Payment Firm

Worldline SA has long claimed to have cleaned up its payments business. Now, regulators and investors are testing that narrative after fresh allegations it overlooked fraud among high-risk clients.

The Brussels Public Prosecutor’s Office on Friday said it has opened a probe into Worldline’s Belgian unit following a series of media reports claiming the French firm ignored warnings and continued doing business with prohibited and high-risk clients, allowing some fraudulent transactions to persist. Sweden’s Financial Supervisory Authority said it called the company to a meeting.

Such attention deepens the crisis at a company that serves 1.4 million businesses around the ...