European Papers - A Journal on Law and Integration, 2021 6(1), 357-389 ... : I. A hybrid judicial actor entering the battlefield against EU fraud. - II. Brief overview of the EPPO's relevant features. - III. The Belgian system of judicial inquiries. - IV. Is a judicial inquiry compatible with the EPPO Regulation? - IV.1. No unambiguous prohibition of judicial inquiries. - IV.2. Interpretation confirmed by the drafting history of the EPPO Regulation. - V. Step-by-step analysis of a judicial inquiry in EPPO cases in Belgium: need for legislative amendments? - V.1. The opening of the EPPO investigation. - V.2. The conduct of the EPPO investigation. - V.3. The reallocation of an EPPO case from one Member State to another. - V.4. The closing of the EPPO investigation. - V.5. The reopening of a closed EPPO case. - VI. The Belgian EPPO Act: preserving the status quo. - VI.1. Brief overview of the Belgian EPPO Act. - VI.2. Is the new Belgian legislation in conformity with the EPPO Regulation? - VII. Conclusion. ...