Tiger Woods interviewed in human growth hormone investigation

Tiger Woods has received treatment from Toronto-based Dr Anthony Galea. 

Photograph: Tony Dejak/AP

Tiger Woods has been interviewed by federal authorities investigating a Canadian doctor accused of distributing human growth hormone, according to Associated Press sources.

The person spoke on the condition of anonymity because the investigation of Dr Anthony Galea is ongoing.

Woods previously acknowledged that he has been treated by the Toronto-based doctor but insisted that he did not receive any performance-enhancing drugs.

"Tiger willingly spoke to the authorities and cooperated fully," Woods's agent, Mark Steinberg, said. "It was confirmed that because he did nothing illegal, he is not the subject of any criminal investigation. Because there is an ongoing investigation involving others, there will be no further comment."