Capitals players passed three rounds of drug tests during each of the past two seasons, and neither the team nor officials from the National Hockey League had reason to believe Thomas's claims, the league and the team said in a joint release Wednesday.
A spokesman for Major League Baseball, which also randomly tests for steroids, said the organization is looking into the matter. Nationals president Stan Kasten said he had been in touch with MLB and didn't have any cause for concern.
"For now, the story is what it is," he said in a conference call. "I don't know anything more than that."
Local authorities executed search warrants in Lakeland, about 30 miles east of Tampa, after receiving information from agents with the U.S. Immigration and Customs Enforcement in Philadelphia.
Thomas told detectives he imported steroids from all around the world, including Iran, Pakistan, Slovakia, Russia, China, Turkey, Spain, Mexico and Germany. The sheriff's office said both Thomas and his wife were semiprofessional body builders, and that he claimed to be the largest steroids dealer in central Florida.
"He was very boastful," Eleazer said.
Thomas' mother told detectives the suspect was introduced to steroids by his father. When asked about steroids, Thomas told investigators, "It's all I've ever known," according to the sheriff's office.
AP Sports Writer Dave Skretta in New York contributed to this report.