WILKINSBURG, Pa. – A body with its hands bound was found Friday at the apartment of a woman who showed up at a hospital with a newborn she falsely claimed was her child but later said she had obtained for $1,000, authorities said.

The body was found in the home of 38-year-old Andrea Curry-Demus, police said. Authorities would not say whether it was male or female.

Wilkinsburg Police Chief Ophelia Coleman said the body was found lying face down. She said she didn't know how long it had been there.

Police visited the building Thursday night but did not go into that apartment, Coleman said. Instead, a relative of Curry-Demus led them to another apartment, she said.

Earlier Friday, police said they were concerned that the infant's real mother – described as a thin, black female in her 20s or 30s named Tina – might be in danger, or need medical attention.

The description was provided by Curry-Demus but authorities aren't sure how reliable it is because she “has a history of emotional problems,” Coleman said earlier Friday.

Curry-Demus pleaded guilty in 1991 to aggravated assault after stabbing a Wilkinsburg woman in an alleged plot to steal the woman's infant. Curry-Demus, then known as Andrea Curry, was sentenced to 10 years' probation.

Allegheny County homicide detectives have taken over the investigation, but Allegheny County Police Assistant Superintendent James Morton declined to comment at the scene Friday night.

The mystery started when Curry-Demus showed up at West Penn Hospital in Pittsburgh on Thursday with a newborn baby, police said. Tests later proved she was not the mother – despite her claims to the contrary, police said.

Curry-Demus was arraigned Friday on a child endangerment charge and jailed until she posts $10,000 bond and undergoes a psychiatric exam.

“I didn't do nothing,” Curry-Demus told reporters as she was put into a police car Thursday.

The baby's umbilical cord was still attached when Curry-Demus arrived at West Penn, but tests proved she was not the mother – despite her claims to the contrary, police said.

Curry-Demus then told police she miscarried in June and didn't want to upset her own mother by telling her she had lost the baby. Curry-Demus said she befriended a pregnant woman and discussed buying her child when it was born, according to the criminal complaint.

Curry-Demus told police she paid a woman named Tina $1,000 for the baby, but authorities have said they don't know how she got the baby.