The reference to the report reads "82/17 Typed exerpt from a report re DCI Jones, The Sound Moderator and Scenes of Crime". Ignore the incorrect spelling of "excerpt". The word "re" means "regarding", so it seems the excerpt was about DCI Jones, not necessarily written by DCI Jones. If the report was produced shortly after DCI Jones was removed from the enquiry, it was possibly written by (or for) Jim Kenneally or Mick Ainsley.