Britney Spears' mother has alleged that the 26-year-old singer was "drugged" by her self-styled manager, Sam Lufti, in order to take control of her life, home and money.
Reuters reports that Lynne Spears' allegations were contained in a sworn declaration submitted to the court in order to obtain a temporary restraining order against Lufti.
The restraining order against Lufti forbids him from contacting Spears in any way.
In the declaration, Lynne Spears alleged: "Mr Lutfi drugged Britney. He has cut Britney's home phone line and removed her cell-phone chargers. He yells at her. He claims to control everything - Britney's business manager, her attorneys and security guards at the gate."
Lynne Spears describes arriving at her daughter's home on 28 January and finding her in a confused state.
She said: "Britney... became very agitated and could not stop moving. She cleaned the house. She changed her clothes many times. She also changed her dogs' clothes many times. Britney spoke to me in a tone and with the level of understanding of a very young girl."
The singer's mother claims that Lufti told her and a friend that he gave the 26-year-old tablets ground up in her food to keep her quiet and told the troubled entertainer that she had to take "10 pills a day" if she wanted to see her two young sons.
Britney Spears' father Jamie and attorney Andrew Wallete have been granted temporary control of the star's assets, pending further legal proceedings.
A judge has ruled that Spears must be examined by a court-appointed psychiatrist to determine if she understands the legal proceedings.
