FILE - In this Feb. 22, 2009 file photo, Madonna arrives at the Vanity Fair Oscar party , in West Hollywood, Calif. The father of a girl from Malawi whom Madonna hopes to adopt says he's capable of taking care of his daughter. Madonna's appeal of a court ruling denying her request to adopt the girl is to be heard Monday, May 4, 2009, in Malawi. [Agencies]

BLANTYRE, Malawi – As Malawi's highest court prepares to decide on Madonna's bid to adopt a three-year-old girl, a dispute has erupted over whether a man trying to stop the proceedings is the child's father.

James Kambewa has sought help from the Malawi Law Society to stop the adoption of the girl, who has been in an orphanage since birth.

The brother of the girl's mother, who died shortly after giving birth, told the AP the family does not know Kambewa. Peter Baneti calls Kambewa "an opportunist."