Major League Baseball has “tons” of witnesses who will help frame the basis of their investigation into the South Florida anti-aging clinic Biogenesis and performance-enhancing drugs in the region, reports Stephen Marcus of Newsday.

It’s unclear if the witnesses are former Biogenesis employees or people who would have more damning information, such as those who allegedly supplied PEDs to players directly. Former Biogenesis chief Anthony Bosch agreed to cooperate with MLB’s investigation recently.

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