Rafael Palmeiro @ MindSay

Baseball isn't the only organization investigating Barry Bonds.

CNN reported Thursday that the federal government is investigating whether Bonds committed perjury during his grand jury testimony in the Bay Area Laboratory Co-Operative case in 2003.

Multiple sources told CNN that a federal grand jury has been hearing evidence for more than a month about whether Bonds perjured himself during his Dec. 4, 2003, testimony.

Meanwhile, baseball star Rafael Palmeiro will not be prosecuted on perjury charges after lawmakers said there isn't enough evidence to prove he lied when he told Congress under oath that he had "never used steroids" -- six weeks before failing a steroid test.

The investigation did not conclude whether the former Baltimore Orioles slugger had actually ever used performance-enhancing substances prior to his testimony before the House Government Reform Committee.

"We couldn't find any evidence of steroid use prior to his testimony," Chairman Tom Davis, R-Va., said in releasing a 44-page report. "That's not a finding of innocence, but it's a finding that we could not substantiate perjury."

Rafael Palmeiro was suspended Monday for violating Major League Baseball's steroids policy, nearly five months after telling Congress that "I have never used steroids. Period."

Palmeiro two weeks ago collected his 3,000th hit, joining Hank Aaron, Willie Mays and Eddie Murray as the only players with 3,000 hits and 500 homers.

Palmeiro, 40, is the seventh and highest-profile player to test positive under the major league policy adopted earlier this year.