Heroin-addict Pham Thu Dung reportedly abandoned her son when he was just
two days old, and fears are growing she may demand he returns to Vietnam.

Angelina - who adopted Pax last week - is said to be worried Dung, 29, could
hound her for money or threaten to contest the adoption because the adoption
papers were only signed by the tot's grandparents.

Pax's granddad Chien told Britain's News of the World newspaper: "Our
daughter is a heroin addict and her life has been ruled by drugs. When she
finds out a rich movie star has adopted her baby, she will go after her for
money and make trouble. She may even try to take the child back."

Chien revealed Dung became pregnant following an affair with a married man
and gave birth to a dangerously underweight son. Doctors even feared the
baby would be born a heroin addict.

Dung abandoned Pax as he lay critically ill in hospital because she couldn't
afford the £15 medical bill.

Pax was sent to Ho Chi Minh City's Tam Binh orphanage and hasn't seen his
mother or grandparents since.

Chien added: "We never visited Pax because we were scared we would fall in
love with him and I knew we couldn't afford to keep him.
"Dung was at our house when we heard a wealthy American wanted to adopt Pax.
She showed no emotion. Then she disappeared - she was still hooked on drugs.
We signed the adoption papers and said we didn't know where our daughter
was."
Dung's sister Trang believes she is desperate to see Pax again.
She insisted: "My sister thinks about her baby a lot. If she could, she
would try to get her son back."

Nguyen Van Trung says even if these claims turn out to be true, it would be impossible for Pax's biological mother to take back custody of her child reports US magazine.

Shortly after the baby arrived, the orphanage tried to find his relatives through a newspaper ad, but there was no answer within 30 days. Therefore, Pax was legally considered an orphan for the last three years.

"Not mentioning that Sang’s mother didn’t claim her baby when the orphanage advertised in newspapers, the fact that she abandoned her child is enough to hold her accountable before laws, let alone demand her child back!�? Trung told a Vietnamese newspaper.

Trung added that after Jolie signed the paper with the Ho Chi Minh City Department of Justice, Pax officially became her child.

"If, in the future, Sang's biological mother comes to the orphanage, we will only provide her with such information as that Sang has been adopted, and where and how he lives," the orphanage director said. "As for demanding Sang back, it is absolutely impossible."

Pax is Angelina's third adopted child - she already has five-year-old
Cambodian son Maddox and two-year-old Ethiopian daughter Zahara.
Angelina and lover Brad Pitt also have a 10-month-old daughter Shiloh
together.