The singer's agent issued a statement responding to recent comments by writer Ian Halperin in the British newspaper Sunday Express, saying 'wild allegations concerning Jackson's health are a total fabrication,' E News reported.

'Concerning this author's allegations, we would hope in the future that legitimate media will not continue to be exploited by such an obvious attempt to promote this unauthorised 'biography,'' Tohme Tohme of the Los Angeles firm Scoop Marketing, Jackson's representative, said.

The spokesman also dismissed Halperin's claim that the singer was suffering from a rare genetic condition known as 'alpha-1 antitrypsin deficiency' and needed a lung transplant to survive.

Halperin, who is working on a biography of Jackson, had also claimed that the singer can barely speak and suffers from emphysema and internal bleeding, and has lost 95 per cent of vision in his left eye.

'Jackson is in fine health, and finalising negotiations with a major entertainment company and television network for both a world tour and a series of specials and appearances,' Tohme said.

The 50-year-old singer and controversies have gone hand in hand. The pop star was previously accused of child abuse charges in 2005. He is also famous for undergoing multiple plastic surgeries and his eccentric lifestyle.