Scientologists target South Park creators in bid to stop them mocking the Church - 2011-10-25
Former member of the Church of Scientology, Mark Rathbun, posted the evidence of the investigation on his own website.
The document shows how agents tried to find direct links to some the duo's closest allies including John Stamos, a friend of Stone's.
'To find a direct line into Stone and Parker, some of their friends have been identified.
The report offered an insight into the operation: 'The special collections (covert information gathering such as trash collection, purchased phone records, hacked airline reservations, purchased bank records) will be debugged in order to get some viable strings that can be pulled.
However, the pursuit ultimately proved to be futile and the memo concluded: 'It is clear that this investigation is not going anywhere and DCOE (D/Commanding Officer External OSA) is getting it debugged.'