PITTSBURGH (AP) — An autopsy on a woman’s body found in an apartment linked to a mystery newborn baby found that the woman was partially eviscerated and her uterus was cut open, authorities said Saturday.

The body was found Friday in an apartment of another woman who showed up at a hospital with a newborn she falsely claimed was hers.

Investigators were trying to determine the woman’s identity, how she died and whether she was the mother of the baby that Andrea Curry-Demus allegedly told police she bought for $1,000.

The victim appeared to have been dead for about two days before she was found, Allegheny County Medical Examiner Karl Williams said in a statement.

The woman’s hands and feet were bound with duct tape, and her face was covered with a plastic material that had also been secured with duct tape. A placenta was recovered at the apartment.

The medical office would not elaborate on what was meant by ‘‘evidence of partial evisceration that included opening of the uterus.’’