A British woman who claims she is the mother of Michael Jackson's three children cannot intervene in the pop star's custody settlement with his ex-wife, a judge has ruled.

Nona Paris Lola Jackson, 36, of London, filed a motion in October demanding a role in the custody settlement between the singer and Deborah Rowe. Superior Court Judge Robert Schnider denied the motion in November and again on Wednesday, saying she had failed to properly notify Jackson and Rowe of her claims.

The woman hadn't provided "credible evidence" that she was the children's birth mother, the judge said.

He left open the opportunity for her to bring the motion again if Jackson and Rowe were served properly.

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Nona Jackson's court papers contended that "Michael and I are a sexually active couple and have been this way from the beginning." She also claimed to have written more than 3,000 songs for him.

Nona Jackson, speaking by telephone, tried to question two lawyers for the 48-year-old singer in court Wednesday.

"Is Mr. Jackson denying I'm the mother of the children?" she asked. "What is he saying about my children?"

However, the judge told her the lawyers weren't obligated to answer. No lawyers for Rowe were present.

Michael Jackson has said Rowe is the mother of his eldest son, Prince Michael, and daughter, Paris. He has not identified the mother of his other son, Prince Michael II.

Jackson and Rowe settled a custody fight in September. Details of that agreement have not been released.