I can't help but think of what Simon Foy said:
BBM
Simon Foy (Scotland Yard’s previous head of homicide): My experience of working with the German police is that they are very careful. What they say publicly, they would have recognised the significance of it, they would have recognised the international sensitivity of it, and they would probably have recognised the public interest in it. It’s the fact that they made that statement (that Madeleine is dead) is in itself significant.
Madeleine McCann: German prisoner identified as suspect - #8
ETA: Having said that ... it is possible that the prosecutor didn't want to say the word 'blood' so he said parts. There may be evidence of blood in whatever they have seen/know.
He said body parts as they haven't ruled out that she could have been dismembered, I think it's pretty obvious.