Employees in the city of Zurich were paid double their salary in February. The amount overpaid amounts to 175 million Swiss francs (183 million euros) The bank that handles payments for city employees has apologized.

The error comes from the software of a Swisscom supplier, which is in the process of “conducting an investigation”, indicated for its part the telecoms operator.“Many employees took it with humor,” Claudia Naegeli, the city’s communications manager, explained Tuesday.