From Live Science:
A small handful of bones found in an ancient church in Bulgaria may belong to John the Baptist, the biblical figure said to have baptized Jesus.
There's no way to be sure, of course, as there are no confirmed pieces of John the Baptist to compare to the fragments of bone. But the sarcophagus holding the bones was found near a second box bearing the name of St. John and his feast date (also called a holy day) of June 24. Now, new radiocarbon dating of the collagen in one of the bones pegs its age to the early first century, consistent with the New Testament and Jewish histories of John the Baptist's life.
"We got some dates that are very interesting indeed," study researcher Thomas Higham of the University of Oxford told LiveScience. "They suggest that the human bone is all from the same person, it's from a male, and it has a very high likelihood of an origin in the Near East," or Middle East where John the Baptist would have lived.