PARIS -- Several elite cyclists have had unannounced doping tests ahead of the Tour de France and some of the initial results were positive, the French sports daily L'Equipe reported Thursday.
"We are targeting six to seven riders considered high risk because of their suspicious behavior and because they are liable to do well at the Tour de France," UCI anti-doping manager Anne Gripper told the newspaper. "Some have already undergone three or four unannounced tests."
The UCI's anti-doping program requires a minimum of one unannounced test per rider per year.
"We received information that they were training in strange locations and in strange outfits," Gripper said, adding that several abnormal results came up during tests over the last several weeks. "We are processing these results and not all were negative."
Gripper said the names and results could not be disclosed before the "B" samples are analyzed.
However, Gripper said some results might be known before the start of the Tour de France on July 7 in London.
The UCI said Thursday it would not comment.
Gripper's disclosure comes after the UCI's most recent measures to fight doping. On Tuesday, the UCI asked all 600 ProTour cyclists to sign an anti-doping charter saying they are not involved in doping and promise to submit DNA samples to Spanish authorities for the Operation Puerto investigation. Riders have until the start of the Tour de France to sign the document.
In the statement, cyclists also pledge to pay a year's salary on top of their two-year ban if found of drug use. Team officials, doctors and other staff will be asked to sign a separate charter later, the UCI said.
Although the federation can't force riders to sign, the UCI is asking team managers to consider that when deciding who to enter for races. The UCI is asking teams not to let riders involved in Operation Puerto or other doping cases start the Tour de France or other races.