A Chinese employee of Huawei has been arrested over allegations of spying in Poland, local media reported Friday. U.S. intel agencies have repeatedly accused Huawei—the second biggest smartphone manufacturer in the world—of being linked to the Chinese government and claim the company’s devices can be accessed by spies. No evidence has been produced publicly to support those allegations and the company has denied the claims. The Huawei employee in Poland was arrested alongside a Polish national—security services searched the local offices of Huawei and the offices of telecom firm Orange Polska, where the Polish national is reported to work. Huawei said it had no comment on the development, but Beijing said it was “greatly concerned” and urged Poland to handle the case “justly.” In December, Canadian authorities arrested Huawei Chief Financial Officer Meng Wanzhou at the request of Washington as part of an investigation into alleged violations of U.S. sanctions.