London, Aug 27 - Michael Jackson's ex-wife Debbie Rowe claims that she secretly reported the shady doctor Arnold Klein to the police because he was allegedly supplying the pop star with powerful drugs.

Thesun.co.uk reports that the 50-year-old Rowe made anonymous calls to cops to tell them how Jackson used aliases to get drugs from Klein. There are court papers, which show that detectives did receive calls from 'an unknown female' who said that Jackson used aliases like Omar Arnold, Fernand Diaz, Peter Madoine and Josephine Baker.

Rowe met Jackson when she worked as an assistant at Klein's Beverly Hills clinic in the 90s.

'Rowe holds Klein totally responsible for Jackson's drug addiction. She believes there is no way he could have got hooked without the help of Klein - and she is potentially the only one who can prove it. She must have suspected what was going on for years. She could really put the boot into Klein and she has good reason to. It makes her skin crawl to think Klein is the biological father of her kids, like reports suggest,' said a source.