Lance Armstrong's Attorney Slams CBS' 'Unpardonable Zeal to Smear' Tour de France Champ

Tyler Hamilton, left, and Lance Armstrong

A "60 Minutes" piece airing Sunday night alleges that Armstrong used performance-enhancing drugs to win the Tour de France seven times.

Lance Armstrong's reps are criticizing CBS' "unpardonable zeal to smear" the seven-time Tour de France winner ahead of a 60 Minutes piece airing Sunday that alleges Armstrong used performance-enhancing drugs to win the race.

On Friday, CBS reported that Armstrong's former teammate George Hincapie had claimed in grand-jury testimony as part of an ongoing federal investigation into the matter that Armstrong used performance-enhancing drugs.

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After the report aired, Amstrong's attorney released a statement saying that it was impossible to know what had Hincapie had actually said because the testimony was confidential.

But on Sunday, attorney Mark Fabiani took a different approach, countering the CBS report in a statement to ESPN.

"CBS has also attacked the reputation of George Hincapie," the statement said. "We are confident that the statements attributed to Hincapie are inaccurate and that the reports of his testimony are unreliable."

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The 60 Minutes piece, portions of which were aired on CBS Evening News on Thursday and Friday, features and interview with former teammate Tyler Hamilton, who says he and Armstrong both used "EPO ... testosterone ... a blood transfusion" while competing. Armstrong strongly denies the allegations.

Hamilton, who returned the gold medal he won in the individual time trial at the 2004 Athens Olympic Games Friday, also testified in the federal investigation.

On Friday, Hincapie said in a statement that he did not talk to CBS News for the 60 Minutes piece.

On Sunday, Fabiani said in his statement: "The only others with access to Hincapie's testimony -- government investigators and prosecutors -- have likewise assured us that they are not the source of the information attributed by CBS to Hincapie. CBS' reporting on this subject has been replete with broken promises, false assurances and selective reliance on witnesses upon whom no reputable journalist would rely. This latest alleged revelation is no more reliable than CBS' earlier claims."