FILE - Belgian top virologist Marc Van Ranst looks into a microscope at his lab in Leuven, Belgium, Feb. 19, 2020. The hunt for an armed man who is on a Belgian terror watch list because of his extreme right sympathies and who had threatened several people, including top virologist Marc Van Ranst, entered a second day on Wednesday, May 19, 2021. Justice Minister Vincent Van Quickenborne described the man as an "acute threat" and is known for his extreme right sympathies. (AP Photo/Francisco Seco)

In this photo provided by the Belgian Federal Police on Wednesday, May 19, 2021, an undated photo of Jurgen Conings. Authorities in Belgium are searching a second day for an armed man who is on a terror watch list because of his extreme right sympathies and who had threatened several people. (Belgian Federal Police via AP)