ST. CHARLES, Ill. (AP) Investigators have determined that a skull discovered in the wall of an Illinois home in 1978 was that of an Indiana teenager who died more than 150 years ago, authorities announced Thursday.

According to a timeline provided by the Kane County Coroners Office, the property owner found the skull while renovating the home in Batavia. Police launched an investigation but the case went cold and the skull was relegated to the Batavia Depot Museum for storage.

The skull went forgotten until March of 2021, when museum supervisors discovered it during an inventory audit. They called police, who sent the skull to the coroners office. Working with Othram Laboratories, a forensic laboratory in Texas that assists law enforcement, the office was able to build a DNA profile from the skull that suggested it was that of Esther Granger, a 17-year-old woman who died during childbirth in Merrillville, Indiana, in 1866.