A number of arrests have been made at Ikea France over allegations the European arm of the Swedish family business hired a security firm to spy on employees and customers using police files.
Ikea France is being investigated as a corporate entity, and could be forced to pay compensation to any victims of spying.
Stefan Vanoverbeke, chief executive of the French division of the Swedish flat pack furniture business, along with his predecessor Jean-Louis Baillot, and chief financial officer Dariusz Rychert were arrested on Monday.