PASO ROBLES, Calif. -- Lance Armstrong's former teammate Tyler Hamilton has told the CBS newsmagazine "60 Minutes" that he saw Armstrong use performance-enhancing drugs, including the banned blood-booster erythropoietin, in 1999 and two subsequent seasons to help prepare for the Tour de France.

"I saw (EPO) in his refrigerator .. I saw him inject it more than one time like we all did, like I did many, many times," Hamilton told 60 Minutes' Scott Pelley. "(Armstrong) took what we all took ... the majority of the peloton. There was EPO ... testosterone ... a blood transfusion."

Mark Fabiani, an Armstrong attorney, said in a statement Thursday: "Tyler Hamilton just duped the CBS Evening News, '60 Minutes' and Scott Pelley all in one fell swoop. Hamilton is actively seeking to make money by writing a book, and now he has completely changed the story he has always told before so that he could get himself on '60 Minutes' and increase his chances with publishers. But greed and a hunger for publicity cannot change the facts: Lance Armstrong is the most tested athlete in the history of sports: He has passed nearly 500 tests over 20 years of competition."

Friday, Armstrong told The Daily Beast website that 60 Minutes "basically reneged" on promises made to him. He said "would not call [the 60 Minutes producer] a straight shooter."

CBS News Chairman Jeff Fager, who is also executive producer of 60 Minutes, told the Daily Beast: "We have been so thorough and fair to Lance Armstrong.

Fager added: "We have shared with them every single allegation in our story ... This is a PR game. Our reporters have done a first-class job."

Hamilton wrote and sent a letter Thursday -- also provided to ESPN.com -- to his close friends and family in what he called a "long overdue" confession, admitting to his own doping history after years of vigorous denials.

"During my cycling career, I knowingly broke the rules," Hamilton wrote. "I used performance-enhancing drugs. I lied about it, over and over. Worst of all, I hurt people I care about. And while there are reasons for what I did -- reasons I hope you'll understand better after watching (60 Minutes) -- it doesn't excuse the fact that I did it all, and there's no way on earth to undo it."

Hamilton had previously described his own and his famous teammate's alleged doping in six hours of closed-door testimony before a federal grand jury after being subpoenaed last July.

"20+ year career. 500 drug controls worldwide, in and out of competition. Never a failed test. I rest my case," Armstrong tweeted Thursday night.

Friday, Hamilton turned his 2004 Olympic gold medal into the U.S. Anti-Doping Agency.

Hamilton told his family and friends in the letter that testifying before the grand jury felt like "the Hoover Dam breaking." In addition to clearing his own conscience, he said he elected to be interviewed by "60 Minutes" because he hopes it will help bring long-term change to a sport plagued by scandal, dishonesty and corruption.

The 40-year-old Marblehead, Mass., native retired in April 2009 after announcing he had knowingly committed a second doping offense. He served a mandatory two-year suspension after his first conviction, for a banned transfusion -- a result he contested vigorously through two rounds of arbitration. His second positive test was for the legal steroid-precursor DHEA, which he said he knowingly ingested in an over-the-counter herbal anti-depressant in February 2009.

When he announced his retirement, Hamilton, then riding for the Rock Racing team, said he had been in a "desperate" state of mind as he fought an ongoing struggle with clinical depression that was first diagnosed in 2003. Hamilton said he stopped taking his prescribed medication, spiraled downward emotionally and took the supplement even though DHEA was clearly listed among the ingredients. He insisted that he did not take it for performance-enhancing purposes.

This is the second time in two years that a blockbuster story will have broken in the middle of the Tour of California, the premier stage race in the United States.

A year ago, Floyd Landis' doping confession and allegations that Armstrong and other riders and cycling officials had been part of organized doping at the U.S. Postal Service teams of a decade ago blew up when his detailed emails leaked. Landis, who was stripped of his 2006 Tour de France title after testing positive for synthetic testosterone, first confirmed and elaborated on the accusations in a lengthy interview with ESPN.com.

The media descended on the race start the next morning. Armstrong, RadioShack team director Johan Bruyneel and every other individual named by Landis denied the allegations. Armstrong crashed out of the race the same day.

The seven-time Tour de France winner suffered through a mediocre performance in last year's Tour and retired last February.

Landis had already met with U.S. Anti-Doping Agency officials and federal investigators when he went public. Investigators led by U.S. Food and Drug Administration special agent Jeff Novitzky -- also the lead investigator in the BALCO case -- had already been gathering evidence in a probe of Rock Racing and its owner, Michael Ball, and expanded their inquiry.

A grand jury seated in the U.S. District Court for the Central District of California sometime during the first half of 2010 began hearing testimony and reviewing documents regarding the Armstrong case in July. Assistant U.S. Attorney Doug Miller, who is based in Los Angeles, is standing behind the investigation.