BEAUNE, France (Reuters) - French rider Remy Di Gregorio was being detained for questioning by French police, a gendarmerie source said on Tuesday.
Cofidis rider Di Gregorio, who was on the Tour de France, was transfered to his hometown of Marseille.
The source added that Di Gregorio was being questioned with two other people after an investigation was opened into alleged doping substances trafficking.(Reporting by Nicolas Burtin, writing by Julien Pretot, Editing by Ossian Shine)
