Las Vegas police have asked football star Cristiano Ronaldo to submit a DNA sample as part of their investigation into rape allegations made against him. The Portuguese forward -- who plays for Juventus in Italy's Serie A league -- has vehemently denied the accusations, and his lawyer Peter Christiansen told AFP the request was standard procedure. "Mr Ronaldo has always maintained, as he does today, that what occurred in Las Vegas in 2009 was consensual in nature, so it is not surprising that DNA would be present, nor that the police would make this very standard request as part of their investigation," he said in a statement.

The Las Vegas Metropolitan Police Department said it had made an official request to Italian authorities, adding it is "taking the same steps in this case as in any other sexual assault to facilitate the collection of DNA evidence". Former model Kathryn Mayorga, 34, of Las Vegas, made the accusations against the now 33-year-old Ronaldo in a complaint filed last year in the state of Nevada. She claims after meeting the footballer at a Las Vegas nightclub, he raped her at his hotel suite on June 13, 2009 -- just before he joined Real Madrid from Manchester United for a then-world record 94 million Euro ($108 million).