The Vatican opened two tombs following a tip-off from a cold case of a missing girl in 1983, but no remains were found, not even the ones of the original listed inhabitants.
Experts were looking for the remains of Emanuela Orlandi, daughter of a Vatican clerk who went missing, after an anonymous tip-off that said that she had been buried in the tomb of two 19th century princesses but no human remains were found in the urn.
Vatican spokesman Alessandro Gisotti says the Vatican would examine records of any structural works done in the cemetery to shed light on the disappearance of the remains.