http://sports.espn.go.com/mlb/news/story?id=3246542From the article:
SAN FRANCISCO -- Barry Bonds tested positive for steroids in November 2001, just a month after hitting his record 73rd home run of the season, U.S. prosecutors said on Thursday.
The allegation came in a legal filing in his steroid perjury case that referred to Bonds' long-time trainer, Greg Anderson.
"At trial, the government's evidence will show that Bonds received steroids from Anderson in the period before the November 2001 positive drug test, and that evidence raises the inference that Anderson gave Bonds the steroids that caused him to test positive in November 2001," U.S. Attorney Joseph Russoniello wrote.
The U.S. government made the assertion in a document that asked a federal court to reject Bonds' motion last month to dismiss the charges that he lied about past steroid use.