LA GRANJA, Spain (Reuters) - Spaniard Isidro Nozal, the 2003 Tour of Spain runner-up, was among three riders who have been provisionally suspended after testing positive for blood-boosting drug erythropoietin (EPO), the UCI said on Friday.
This year's Tour of Portugal winner Nuno Ribeiro of Portugal and Spain's Hector Guerra have also been suspended.
Guerra and Ribeiro had been selected to take part in the world championships next week in Mendrisio, Switzerland. The International Cycling Union said it had asked their respective federations not to allow the pair to participate.
(Reporting by Alasdair Fotheringham, editing by Justin Palmer)