"Harald Range launched an official investigation in June, believing there was enough preliminary evidence to show unknown U.S. intelligence officers had tapped the phone, although there was not enough clarity on the issue to bring charges.
On Wednesday he said however, "the document presented in public as proof of an actual tapping of the mobile phone is not an authentic surveillance order by the NSA. It does not come from the NSA database.
"There is no proof at the moment which could lead to charges that Chancellor Merkel's phone connection data was collected or her calls tapped."
Range said neither a reporter for German news magazine Spiegel who presented the document, nor Germany's BND foreign intelligence agency, nor Snowden had provided further details to his office. The investigation continues, however. http://mobile.reuters.com/article/idUSKBN0JP1QG20141211?irpc=932
if that document is in doubt, than there can also be some doubt between other documents - even more now there seems to be several caches or selections of documents that are being used by different people in different places
the effect of course will be that the real journalists will now ask more guarantees from the NSAjunkies to proof that their documents are really coming from a real Snowden cache and are really from the NSA