The New York Times reported the criminal complaint lodged against Dr. Anthony Galea in U.S. District Court in Buffalo, N.Y., accuses him of illegally distributing human growth hormone, introducing the unapproved drug Actovegin into interstate commerce, lying to investigators and conspiring to defraud the United States.
The complaint doesn't name the players involved, but the newspaper said two sources it said had been briefed on the investigation said Galea and an assistant were en route to Washington to treat a Redskins player last September when the assistant was stopped at the U.S.-Canada border with human growth hormone. That incident triggered investigations in both countries.
The Times said Galea's attorney and prosecutors didn't immediately return calls for comment
The newspaper reported an NFL spokesman said league officials had not been told the players' names.
"We obviously have a very strong interest in learning who these players are and about their involvement with any prohibited substances so that we can enforce our policies," league spokesman Greg Aiello said. "When we have had evidence of illegal purchase, possession, or use of H.G.H., we have imposed discipline and are fully prepared to do so again if the facts support it."
He said league officials have been in contact with authorities and will continue to cooperate with them.
Galea, who has ties to pro athletes such as baseball's Alex Rodriguez and golf's Tiger Woods, also faces charges in Canada related to Actovegin, the Times said.