A South Florida man who admitted working as a black market chemist has pleaded guilty to federal charges stemming from the Major League Baseball scandal over performance-enhancing substances.

Brazilian citizen Paulo Berejuk pleaded guilty Thursday to conspiracy to distribute testosterone. Investigators say Berejuk was the main supplier for Anthony Bosch, who ran the now-closed Biogenesis of America clinic that supplied banned substances to MLB players and other athletes.

Berejuk faces a reduced prison sentence of up to three years because he agreed to cooperate with prosecutors. The maximum sentence is 10 years.

Bosch previously pleaded guilty and is awaiting sentencing. Several others are charged in the case, including Yuri Sucart, a cousin of New York Yankees star Alex Rodriguez. Rodriguez has admitted to using substances supplied by Bosch.

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