Victor Conte, the architect of a scheme to provide undetectable performance-enhancing drugs to professional athletes, including baseball stars Barry Bonds, Jason Giambi and Olympic track champion Marion Jones decades ago, has died. He was 75.

Conte died Monday, SNAC System, a sports nutrition company he founded, said in a social media post. It did not disclose his cause of death.

The federal government's investigation into another company Conte founded, the Bay Area Laboratory Co-Operative, yielded convictions of Jones, elite sprint cyclist Tammy Thomas, and former NFL defensive lineman Dana Stubblefield, along with coaches, distributors, a trainer, a chemist and a lawyer.

The investigation led to the book "Game of Shadows." A week after the book was published in 2006, MLB commissioner

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