This is over a claim that Mr Namah spent K50 million during the 2012 elections.
He said Mr Namah himself had made the claim, and it raises serious concerns that warrant scrutiny.
However, the Ombudsman Commission responded, suggesting the matter should be considered by the Registrar of Political Parties and Candidates Commission.
In his correspondence with the Chief Ombudsman, Mr O’Neill said the failure of the Commission to inquire into this claim, ‘casts light on the fundamental question of fairness and impartiality on the part of the Commission’.
‘This matter is the subject of public interest, which warrants Ombudsman Commission investigation under the Leadership Code.
‘The Ombudsman Commission should not simply ignore the public complaint, which has been lodged, and refer it to another authority for investigation,’ he said.