Forensic scientists say they have failed to unravel the 200-year old mystery of the skull of legendary Austrian composer Wolfgang Amadeus Mozart.

Austrian television commissioned American and Austrian scientists to carry out DNA tests on a skull that some experts insist is Mozart's.

The scientists hoped to match its DNA to genetic samples taken from what they believed are the skeletons of Mozart's grandmother and niece.

The scientists said on Austrian television Sunday that the skeletons do not match the skull, and that the skeletons are also unrelated - creating a whole new mystery of who is buried the Mozart family crypt.

Mozart was buried in a Vienna pauper's cemetery in 1791. The skull was thought to have been dug up 10 years later.

Some information for this report was provided by AP and Reuters.