Britney Spears has attempted to end her father's conservatorship of her estate, according to her former manager's sister.

Legal representatives for the singer's father James - who has control of her estate - are seeking to extend a restraining order against her former manager Sam Lutfi, who they claim is a danger to Britney.

But according to Lutfi's sister Christina, the Toxic singer has attempted to contact Lutfi to end James Spears' temporary conservatorship.

"[Britney] told me she wanted to get a hold of Sam," said Christina, 25.

"She wanted him to help her find a lawyer, and wanted someone to get a prepaid cell phone to her."

Ms Lutfi told the Los Angeles court: "She was scared because her father was blackmailing her with visitation rights over her kids."

She claimed to have given the pop singer a mobile phone at a hotel sauna, saying it was from Sam Lutfi and Britney's ex-boyfriend Adnan Ghalib, who is also banned from contacting the singer.

The phone was later found and confiscated by the Spears legal team and resulted in the current application to extend the restraining order against Sam Lutfi.

James Spears' lawyer Blair Berk had on Wednesday told the court of Britney's anxiety over her relationship with her ex-manager.

He said the singer "was in such fear [of Sam], she asked if I could get him arrested, to keep him away from her" and moved to dismiss the veracity of an audio recording which surfaced online this week, which celebrity websites claimed featured Britney asking for legal help to end her father's management of her estate.

Closing arguments in the case over a restraining order against Sam Lutfi will be heard on April 21st.

02/04/2009 09:40:32