Dead baby was found in a trash can in Urgench city on January 1, the Khorezm province prosecutor's office said on Thursday.
Forensic medical examination found that the baby was born prematurely and this was the cause of death.
During the check, no injuries were found on the girl's body. Remains of the drug Mifepristone, which is used to terminate a pregnancy, were found in the blood and placenta.
With investigation underway, the identity of the mother is yet to be established.