Updated

State prosecutors in Florida have launched an investigation into the now-closed clinic at the center of Major League Baseball's latest substance abuse controversy.

A spokesman for Miami-Dade State Attorney Katherine Fernandez Rundle confirmed Monday that at least one criminal subpoena has been issued for documents in the case. Spokesman Ed Griffith would not characterize the scope of the probe, but said it involved potential violations of state law.

A federal grand jury based in Miami is also investigating the source of drugs allegedly supplied to players by Biogenesis of America, an anti-aging clinic formerly located in Coral Gables.

MLB has sued the clinic and its former chief, Anthony Bosch, claiming it helped players such as Ryan Braun, Alex Rodriguez and others violate contract provisions against performance-enhancing drugs.