Oprah Winfrey says she was "mesmerized and riveted" by her interview on Monday with Lance Armstrong in which the disgraced cyclist admitted to using performance enhancing drugs.
Winfrey appeared on CBS Tuesday morning to discuss her interview with Armstrong, which will air over two nights on Thursday and Friday on the Oprah Winfrey Network.
Armstrong admits to doping
Winfrey described the interview as "forthcoming" but chose not to reveal many details.
“He did not come clean in the manner that I expected," she said. "It was surprising to me."
Armstrong, 41, spent more than a decade denying that he used performance enhancing drugs. On Monday, he personally apologized to staff members of the Livestrong charity that he founded.
In a statement to NBCNews.com, Livestrong director of communications & external affairs Rae Bazzarre confirmed a conversation took place.
"Lance came to the Livestrong Foundation's headquarters today for a private conversation with our staff and offered a sincere and heartfelt apology for the stress they've endured because of him and urged them to keep up their great work fighting for people affected by cancer."
The interview was to be broadcast on Thursday, but Winfrey said it will now run in two parts over two nights because there is so much material. She added that it was too big of a story to “leave half of this on the cutting room floor.”
Armstrong won every Tour from 1999 to 2005, but each of those titles was stripped last year as the U.S. Anti-Doping Agency released a massive report built around the testimony of former teammates. USADA accused Armstrong of masterminding a long-running and sophisticated doping operation on his teams.
Slovakian rider Peter Sagan won stage eight of the Tour de Suisse and Mathias Frank retained the yellow jersey on Saturday heading into the final day individual time trial.
THE HAGUE, Netherlands (AP) -An independent commission that investigated doping by Dutch cyclists and their teams recommended Monday that the responsibility for testing and sanctioning riders be taken away from the International Cycling Union to prevent the appearance of a conflict of interest.
Rui Costa of Portugal won the seventh stage of the Tour de Suisse in a late sprint Friday, while Mathias Frank retained the overall lead.
The road to Paris
The best images from the 2012 Tour de France.
Fans of the Tour de France
Cycling fans show their love for the Tour in many creative ways.
Crashes of the Tour de France
Check out some of the nasty crashes from the 2012 Tour de France.