From the USPS team: "Lance Armstrong has filed libel suits against the London Sunday Times and sports writer David Walsh in London, and against Walsh, Pierre Ballester and the publishers of LA Confidential and L'Express in Paris.

Armstrong was responding to allegations in a forthcoming book titled, LA Confidential, co-written by Walsh and Ballester, that Armstrong has used performance enhancing drugs. Armstrong said he "utterly denies ever having taken any performance enhancing drugs."

Extracts from the book have appeared in L'Express and some of the book's allegations were repeated in yesterday's Sunday Times, Armstrong's attorneys said."

Check out the TdF official website.