The custody battle for Anna Nicole Smith's daughter will move to the Bahamas, where an ex-boyfriend said he will ask for a DNA sample from the late Smith.

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Larry Birkhead, the California photographer who claims he is 5-month-old Dannielynn's father, said he plans to ask a Nassau court to allow the DNA extraction to determine the child's paternity, Birkhead's attorney Debra Opri told People magazine.

Smith died Thursday in Hollywood, Fla., of unknown causes.

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Smith's companion Howard K. Stern is listed as the father on the birth certificate.

"Larry Birkhead believes now is the time to go to the Bahamas when the whole world's magnifying glass is on the Bahamian government and the legal system," Opri said.

Two other men claimed they may be the child's father.

Prince Frederic von Anhalt, husband of actress Zsa Zsa Gabor, said he may be the father and may file a paternity challenge, MSNBC said.

Smith's bodyguard Alexander Denk said he, too, may be the girl's daddy, MSNBC said.

Smith's estranged half-sister, Donna Hogan, suggested in an unpublished biography that Smith impregnated herself with the frozen sperm of her late husband, billionaire J. Howard Marshall II.