Belgian police have raided several locations in the country as part of an investigation into corruption within the European Parliament.
Prosecutors said the alleged corruption was "under the guise of commercial lobbying", and that several people had been detained for questioning.
According to officials, an address in Portugal was also searched by local police, while in France, one person was arrested.
Belgian newspaper Le Soir said the investigation was linked to Chinese tech giant Huawei and its activities in Brussels since 2021. Huawei said it was taking the allegations "seriously" and would "urgently communicate with the investigation".