However, Snowdon has escalated the fight by commissioning an Auckland accountant to prepare a report, which has gone to the SFO.
The SFO confirmed it had received the report from BDO Information Systems Ltd, alleging that $795,000 is missing and untraceable from the state-owned broadcaster's official financial records between 1999 and 2003.
Wayne Kedzlie, associate director of the accountancy firm, claims the money is part of about $12 million historically misappropriated or allegedly used for improper purposes.
A spokesperson for the SFO said it was deciding whether to initiate an inquiry.
The 310-page report claims:
* $7 million was improperly spent by RNZ funding programmes and staff for purposes other than what was stated in its funding contract with New Zealand On Air.
* $2.5 million was spent on legal fees by RNZ defending Snowdon's case.
* $1.3 million was spent between 1999 and 2003 on unnecessary discretionary expenditure.
But central to the report is a claim that three annual lump sums of $265,000 are missing from RNZ's financial records between 2000 and 2003.
"No one would suspect possible theft within such an iconic institution and they have not, until now," Kedzlie said.
A spokesman for Broadcasting Minister Jonathan Coleman said it was inappropriate for the minister to comment yet.
RNZ chief financial officer Ken Law said the fraud allegations had been consistently found to be untrue. He would not comment about the report to the SFO.