The Belgian cycling federation is seeking a 300,000 euros ($385,000) fine from retired cyclist Leif Hoste in an anti-doping case in Brussels, based on alleged irregular blood values in his biological passport.
Federation prosecutor Jaak Fransen said on Friday the case was prompted by an International Cycling Union investigation in January of Hoste, a three-time runner-up of the Ronde of Flanders classic.
Hoste, 35, ended his career last year so a two-year doping suspension would not necessarily hit him hard.
The potential fine against him would be the biggest in Belgian cycling.
Hoste's lawyer, Kristof De Saedeleer, said the rider was "hoping for a positive outcome."
The next session in the case is set for June 13.