An anthropologist shopping at a store in North Fort Myers on Saturday spotted what officials determined was probably a human skull.

An anthropologist made a surprising discovery in a Florida thrift shop’s Halloween section on Saturday, officials said.

The North Fort Myers shopper spotted a skull and recognized it as a human skull, according to the Lee County Sheriff’s Office. Responding detectives also determined the skull belonged to a human.

The store owner said the skull had been in a storage unit that was purchased years ago, authorities said.