Victor Conte, the architect of a scheme to provide undetectable performance-enhancing drugs to professional athletes including baseball stars Barry Bonds and 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 (BALCO), 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.

Conte, who served four months in federal prison for dealing steroids, talked openly about his famous forme

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