According to German federal prosecutors, the documentation of his investigation is no longer available and, it has most likely been destroyed.
German prosecutors at both the state and federal levels have started a variety of efforts to restrict access to material on the Internet.
After the investigation, German prosecutors concluded that they did not have enough evidence to charge him with espionage.
The German prosecutors then all but gave up on the case.
The German prosecutors have said they intend to decide on the charges before the end of the year.
German prosecutors have said they seized two million pages of documents.
German prosecutors said they would review the new evidence, but made no immediate move to reopen the case.
But German prosecutors asserted that they have legal authority to try him here.
The civil suit may also have galvanized the German prosecutors.
German prosecutors earlier said they may ask for his extradition.