As forensic science advanced, police decided to use DNA testing to try and locate a familial match for the child, using blood and tissue samples taken in 1993.
Using an online database, investigators were led to 49-year-old receptionist Gail Eastwood-Ritchey, who was married with three children and lived in Cleveland.
Last Thursday, Eastwood-Ritchey was officially charged with one count of aggravated murder and another count of murder.
'At that time, she admitted that she had birthed a child, placed him in a trash bag and left him in a wooded area,' Geauga County sheriff Scott Hildenbrand said.
'Her statement was that she hid the pregnancy and that nobody knew she was pregnant.'
According to the county sheriff, Eastwood-Ritchey also allegedly admitted to disposing of another newborn baby in 1991.
The father's child is believed to be her current husband.
Eastwood-Ritchey appeared in court on Monday and plead guilty to the charges. If convicted, she may face a life sentence.
The case is eerily similar to Australian woman Keli Lane, who was found guilty in 2010 of murdering her baby daughter Tegan in 1996.