Britney Spears' former manager claims the singer's family has ruined his life. Sam Lutfi – who is suing the Spears family for defamation – has filed legal papers detailing how the singer's parents Jamie and Lynne have made his life a living hell.

In them, he claims Lynne's book, ‘Through The Storm’, is "full of lies", particularly when she says he drugged Britney by grinding up pills and hiding them in her food.

As a result of the accusations, Lutfi says he is constantly "harassed and cajoled by the public".

He added: “I am constantly in fear for my life."

Britney's ex-boyfriend, paparazzo Adnan Ghalib, has written a declaration supporting Lutfi, swearing the manager was not drugging the star to hold her hostage.

Lutfi was banned from approaching Britney for three years in April, after a Los Angeles judge imposed a restraining order. He must stay at least 100 yards away from the 27-year-old singer, and cannot attempt to contact her via email, phone or mail. Jamie Spears filed for a restraining order against Lutfi and Ghalib earlier this year, claiming they had repeatedly harassed Britney.