DENVER • Nigeria’s top Olympic medal hopeful was thrilled. The drugs her doctor sent were working.

“Eric my body feel so good,” Blessing Okagbare said in a text not long after running the 100 meters in a personal-best 10.63 seconds. “Whatever you did is working so well.”

“Eric” is Eric Lira, a naturopathic doctor in Texas, who on Wednesday became the first person charged under a landmark U.S. law designed to add legal accountability to a global anti-doping system that has long struggled to regulate itself.

Okagbare was the highest-profile sprinter in a country with a history of doping problems, one that could be facing more scrutiny under the auspices of the Rodchenkov Act that was passed in 2020 to root out cases like these.

“It’s not winning if you take illegal substances — it’s cheating,” said FBI Assistant Director Michael J. Driscoll, who helped spearhead the investigation.

The texts between Lira and Okagbare were among the 10 pages’ worth of evidence the U.S. Attorney’s Office in Manhattan

unsealed in a criminal complaint. The attorney’s office said Lira distributed the drugs, including human growth hormone and erythropoietin, a blood-building hormone, “for the purpose of corrupting” the Tokyo Olympics.

The 33-year-old Okagbare, who won a silver medal in the long jump at the Beijing Games in 2008, is not specifically named in the complaint. But the description of “Athlete 1,” along with her racing and suspension history, matches Okagbare to a “T” — from the 10.63 she was excited about in mid-june to the provisional suspension she received in late July for a positive test for human growth hormone.

That suspension was announced only hours before Okagbare was to run in the 100-meter semifinals in Tokyo.

The Athletics Integrity Unit, which oversees the anti-doping effort in track and field, had previously said Okagbare tested positive for a blood booster in Nigeria in June. She was charged with failing to cooperate with the investigation after she disobeyed an order to produce “documents, records and electronic storage devices” in relation to the other charges, the AIU said at the time.

Anti-doping officials say the ability to detect doping and suspend Okagbare, who was considered a strong medal contender, before she raced was a victory in and of itself — one that prevented another chapter in the long cycle of medals being stripped and re-awarded years after an infraction takes place.

Okagbare did not return text messages left on her cell phone by The Associated Press. She has been mostly silent, other than a tweet last year: “When it’s time to say anything, I will and it will be worth the wait,” she said.

Even before Okagbare’s suspension, there was trouble brewing in Nigeria, which, to anti-doping regulators, was considered a “high risk” country because of flaws in its testing program.