Tiger Woods' doctor, suspected of providing athletes with performance enhancing drugs, is under FBI investigation

A Canadian doctor who has treated many N.F.L. players as well as Olympic medalists like Donovan Bailey and the world’s top golfer, Tiger Woods, is under criminal investigation in the United States.

He is suspected of providing athletes with performance-enhancing drugs, according to several people who have been briefed on the investigation.

The F.B.I. investigation of Dr. Anthony Galea, a sports medicine specialist who has treated hundreds of professional athletes across many sports, follows his arrest on Oct. 15 in Toronto by the Canadian police. Human growth hormone and Actovegin, a drug extracted from calf’s blood, were found in his medical bag at the United States-Canada border in late September. Using, selling or importing Actovegin is illegal in the United States.