Lance Armstrong has not been contacted by federal agents investigating claims of doping, his legal team has confirmed.

Floyd Landis, who was stripped of the 2006 Tour title after testing positive for elevated levels of testosterone, in May admitted to using performance-enhancing drugs, while also levelling allegations against his former team-mates at the United States Postal Service team, including Armstrong.

Armstrong, who this weekend is set to complete his final Tour in Paris, strenuously denies all allegations and has never failed a drug test.

Defence attorney Bryan Daly, a partner in Los Angeles law firm Sheppard, Mullin, Richter and Hampton, was appointed by Armstrong last week, but is still to establish if federal investigators wish to speak to the 38-year-old.

Although reports from the United States suggest many of Landis and Armstrong's acquaintances have been issued with subpoenas to cooperate in the inquiry, the Texan is not among them.

Daly told Press Association Sport: "There has been a great deal of swirling rumours about an investigation.

"Lance Armstrong, being prudent, wanted to get some advice.

"I've been on the case since the middle of last week but have not been contacted by investigators."

Daly, himself a former federal prosecutor, again doused water on the claims of Landis.

He added: "Lance Armstrong is probably the most tested athlete in history and has never failed a test.

"Actions speak louder than words."

Landis' allegations, initially made by email, sparked a United States Food and Drug Administration investigation, which has since become global after Interpol and the World Anti-Doping Agency facilitated links between agencies.

But Daly questioned the credibility of a case based on "rumour and innuendo".

He said: "Why is federal government devoting resources to rumour and innuendo which deal with the internal rules of a sporting body?

"I'm not sure what the federal criminal offence would be."

Daly added Armstrong wished for a resolution to the case so the Team RadioShack rider could put the allegations behind him in his post-Tour career.

Landis again last night repeated his allegations against Armstrong in an interview broadcast on the ABC News programme Nightline.