A former friend of Kate Moss has told British newspaper The Sun the supermodel once snorted cocaine at the house of former South African president Nelson Mandela. Model booking agent GAVIN MASELLE claims the catwalk queen needed to use the drug at regular intervals during their friendship, and took some just minutes before meeting Mandela on a charity visit to Cape Town in 1998. The Sun has also published photographs of Moss posing in front of what appears to be lines of cocaine. Maselle tells the newspaper, "She was insatiable. I couldn't believe what I was seeing. We were there at Mandela's house - and Kate was doing coke. "Kate has been addicted for years. I truly hope she stays off coke because if she ever goes back, it will be the end of her." Moss checked herself into a rehabilitation clinic in America last year (05) after a different British newspaper printed images of her allegedly snorting cocaine during a recording session with her ex-boyfriend Pete Doherty's band Babyshambles.