Federal prosecutors announced charges on Monday against more than two dozen racehorse trainers, veterinarians and drug distributors in a wide-ranging series of indictments that laid out a corrupt scheme to secretly dope horses and cheat the betting public in what has become a $100 billion global industry.

Among the 27 people charged was Jason Servis, the trainer of Maximum Security, one of the best racehorses in the world. He covertly administered performance-enhancing drugs “to virtually all the racehorses under his control,” the indictment charged, adding that from February 2018 to February 2020 he entered horses in more than 1,000 races.

In May, Maximum Security crossed the finish line first at the Kentucky Derby, only to be disqualified for almost knocking over a rival horse and slowing the momentum of others. Country House, a 65-1 shot, was named the winner. Last month, Maximum Security won $10 million at the Saudi Cup at the King Abdulaziz racecourse in Riyadh, the world’s richest race

The scheme, as laid out in four separate indictments against a total of 27 people, was to manufacture and distribute adulterated and misbranded drugs and to secretly administer them to racehorses under their control.