Madonna is reportedly at the centre of a sex tape scandal. A cameraman claims to have a video of Madonna and baseball player Alex Rodriguez romping on a sofa. He is trying to sell the tape - allegedly shot with a hidden camera in an apartment owned by a friend of the cameraman which was used by the couple for secret liaisons - for 1 million.

The unnamed owner of the tape claims he visited the property and hid a camera, pointed at the sofa which captured the X-rated footage two months ago. A legal source told Britain's Daily Star newspaper that the implications of the secret filming could be dire for the cameraman, saying: "If footage was obtained in this way it would be an outrageous invasion of privacy.

But more than that he would not have had his friend's consent to install the camera and must have entered the apartment without approval to hide it. "He would be guilty of voyeurism. Instead of making a million he'd be going to jail for a few years."

Madonna, 49, has vehemently denied rumours she has been having an affair with baseball player Alex - nicknamed A-Rod - and has repeatedly denied reports of a rift in her marriage to Guy Ritchie.

Madonna's lawyers are "aware" of the sex tape claims, but have refused to comment further. Meanwhile, Madonna has reportedly rearranged her forthcoming 'Sticky and Sweet' world tour so she can attend the premiere of Guy's new movie 'RocknRolla' and his 40th birthday party on September 10th.