Tour de France pre-race favourite Alexandre Vinokourov has tested positive for illegal doping.
The Astana team revealed that their Kazakh leader failed a test after winning Saturday's time trial in Albi, and have withdrawn from the Tour.
Vinokourov's blood sample was analysed at Châtenay-Malabry and reportedly showed two different types of red blood cells, showing the rider had received a transfusion shortly before the start of the stage.