Servis was one of 27 horse racing professionals charged by federal authorities in a widespread worldwide scheme to drug horses to make them race faster.
Twenty-five others also were indicted in a wide-ranging federal investigation into the administering of Performance Enhancing Drugs, or PEDS, to horses at racetracks around the country.
Servis trained Maximum Security, the apparent victor disqualified from the 2019 Kentucky Derby for interference and the victor of the $10 million share of the Saudi Cup. The horse also spent some time training in Marion County.
Prosecutors unsealed four indictments Monday that accuse 27 people - horse trainers, veterinarians and drug distributors - of carrying out separate but related conspiracies to covertly provide performance-enhancing drugs to racehorses.
"This is the most far-reaching prosecution of racehorse doping in the history of the Department of Justice".
Servis stands accused of using PEDs on "virtually all the racehorses under his control".
"(They) experienced heart problems, an excessive effort that led to fractures in the legs, an increased risk of injury and, in some cases, death.
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During the conversation, he addressed the attack on Harris, claiming she had been on drugs and he simply was restraining her. The Los Angeles Sheriff's Department said in a statement: 'Homicide investigators have responded to the death of a woman.
Navarro has been a controversial figure in the horse racing world for years.
The 44-page indictment unsealed Monday includes intercepted phone calls between Navarro and others including Servis.
Both Jason Servis and Navarro made more than 30 million dollars each in their racing careers.
XY Jet had been administered a number of adulterated and misbranded performance-enhancing medicine simply earlier than two races, one in Florida and one in Dubai, that earned him greater than $1.5 million, prosecutors mentioned.
Drugs allegedly for sale included "blood builders" used to stimulate equine endurance, "pain shots" and "nerve blocks" used to deaden a horse's nerves, and "red acid" used to reduce inflammation in joints.
Neither trainer immediately responded to the charges. "However, those who remain opposed to uniform, independent regulation of the sport obstruct the type of progress needed to curb this abuse".