Pressure to remove Jamie Spears from daughter Britney's conservatorship mounts

The singer's new lawyer filed a petition to remove her father.

Britney Spears may have just received more legal ammunition in her quest to remove her father Jamie Spears from her conservatorship.

After Britney's new lawyer, Mathew Rosengart, filed a petition to officially replace Jamie as the conservator of the singer's estate, the conservator of Britney herself, Jodi Montgomery, has filed documents agreeing that Jamie should be removed.

In documents obtained by ABC News, Montgomery -- who's in charge of Britney's well-being and coordinates with her doctors -- writes that she agrees that "Jamie Spears should not continue to act as … Conservator of the Estate, because his doing so is not in the best interest of” of Britney. The document also says that the singer's medical team agrees that Jamie should not be involved as conservator any longer.

Montgomery's filing also approves of the plan to appoint a certified public accountant, Jason Rubin, to replace Jamie as the one in charge of his daughter's finances. Rosengart's petition to remove Jamie claimed that he had "profited handsomely" from managing Britney's money, revealing that he receives $16,000 per month in compensation.

Rosengart also claimed Britney's net worth is suspiciously low, and wrote in the petition: "Serious questions abound concerning Mr. Spears’s potential misconduct, including conflicts of interest, conservatorship abuse and the evident dissipation of Ms. Spears’s fortune, which Mr. Spears has effectively controlled since 2008."

Jamie has denied any wrongdoing in his role as conservator of Britney's estate.

Last month, Britney shocked the world by telling a Los Angeles Superior Court judge that her conservatorship was "abusive" and was doing her more harm than good.

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