The link to the German gov report 

 |Willi Kammerer; Anja Kammerer- Narben bleiben die Arbeit der Suchdienste - 60 Jahre nach dem Zweiten Weltkrieg Berlin Dienststelle 2005 p.12 (Published by the Search Service of the German Red Cross. The forward to the book was written by German President Horst Köhler and the German interior minister Otto Schily 

 This is clear cut, there should be no dispute