National Party deputy leader Paula Bennett says when she was told Winston Peters had been overpaid superannuation she thought it was "great gossip" and "a great one to yack about" - and therefore didn't tell anyone.
Peters is now in a position to decide the next Government and has previously pointed the finger at National after details of his superannuation overpayments were leaked to media during the election campaign.
Bennett and social development minister Anne Tolley were briefed on the overpayments by government department heads under a "no surprises" policy. Tolley then told the PM's chief of staff Wayne Eagleson.
All three have denied leaking the information.
Asked about the leak on The AM Show this morning, Bennett said she had made it clear many times it wasn't her.