Golfer Tiger Woods has been interviewed by authorities investigating Canadian doctor Anthony Galea, who is accused of providing performance enhancing drugs to pro athletes, the New York Times reported yesterday.

Citing "two people briefed on the matter," the newspaper said Woods was among a second wave of sports figures to be interviewed by authorities about Galea.

Baseball players Jose Reyes and Carlos Beltran acknowledged earlier this year that they had been contacted in the probe.

Woods had already confirmed that he was treated by Galea, who administered platelet-enriched plasma treatments for Woods' left knee.

Woods has denied taking any performance-enhancing substances.

A US criminal complaint filed last month charged Galea - who is not licensed to practise medicine in the United States - with conspiracy, smuggling, unlawful distribution of Human Growth Hormone (HGH) and introducing the unapproved drug Actovegin into interstate commerce.

The charges are similar to those filed by Canadian authorities in October.

According to court filings, some of Galea's athlete clients received intravenous vitamin drips, others had injections of Actovegin and some received injections of HGH, banned in sports as a performance enhancer.

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