Michael Jackson's Kids Meet With Court Appointed Guardian

"I believe that Katherine and the children who are benefactors of the estate fall on one side, and then Randy, Jermaine and Rebbie and Tito fall on the other side," Mann said. "They're a group of people who have a great deal of questions about the administration of the estate."

Modabber said, "I can't speak for them. I don't know what's motivating Jermaine and Randy and some of these others, but money is not a bad guess."

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Katherine Jackson attends the Michael Jackson... View Full Size

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Katherine Jackson attends the Michael Jackson "Immortalized" hand and footprint ceremony held at Grauman's Chinese Theater on January 26, 2012 in Hollywood, California.

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Modabber and Mann faced off in court Monday in a dispute over Mann and Katherine Jackson's selling Michael Jackson merchandise.

"It doesn't matter that it's Howard Mann and he may give some of the money to his family, to Katherine Jackson or anybody else," Modabber said. "You can't take property that belongs to the estate, make money from it, without getting permission from the estate."

Mann's attorney argues the material is and always was owned by Katherine Jackson and her husband, Joe, and not the late King of Pop.

Michael Jackson's estate is now worth about $1 billion and counting.