Britney Spears' mother has accused her former manager, Sam Lufti, of putting crushed-up drugs into the singer's food during his time working with Spears.
The accusation comes in the midst of a legal battle between Lufti and the Spears family in which he is suing Lynne Spears for defamation.
Lynne Spears told the Los Angeles court that Lufti told her about drugging her popstar daughter in Jaunary 2008, and that he also disabled her phone - cutting her off from family and friends.
Those were his exact words," said Spears as she took the witness stand during the trial. "I was very worried and I didn't know what to do, so I tried to get her away from there."
Spears also admitted that despite her concerns for her daughter, she did not seek police help at the time. She later penned a book, Through The Storm, which made various accusations towards Lufti.
Lynne Spears made accusations towards Lufti in her 2008 book
Lufti however insists he was trying to wean Britney off drugs when he worked with her, and reportedly broke down in tears in court when he described receiving death threats after Lynne Spears' book was published.
He claims that he was made a scapegoat for Spears' own problems, and that he was working with the star in an attempt to help her with her addiction problems.
"She liked to use amphetamines. Mostly everything that went wrong was because of this drug," said Lufti's attorney Joseph Schleimer to the jury at LA's Superior Court, adding that she had "a prescription for amphetamines, and overdosed on them".
Schleimer also claims that Spears shaved her head in 2007 in order to avoid taking a drugs test, despite his attempts to help her through her problems.
Photos: music stars before and after drugs