AUSTIN, Texas – Lance Armstrong ended a decade of denial by confessing to Oprah Winfrey that he used performance-enhancing drugs to win the Tour de France, a person familiar with the situation told The Associated Press.

The admission Monday came hours after an emotional apology by Armstrong to the Livestrong charity that he founded and turned into a global institution on the strength of his celebrity as a cancer survivor.

The person spoke on the condition of anonymity because the interview is to be broadcast Thursday on Winfrey’s network. She tweeted afterward, “Just wrapped with @lancearmstrong More than 21⁄2 hours. He came READY!” She was scheduled to appear on “CBS This Morning” today to discuss the interview.