The former head of the Serious Fraud Office was unaware of any smear campaign against him in 2011, but hopes an inquiry will bring out the truth.
Adam Feeley was allegedly the target of a smear campaign orchestrated by WhaleOil blogger Cameron Slater and then-justice minister Judith Collins, who was forced to resign on the weekend.
An email from Slater written in 2011 said Collins, the minister responsible for the SFO, was "gunning for Feeley".
Slater said: "Any information that we can provide [Collins] on [Feeley's] background is appreciated. I have outlined for her a coming blog post about the massive staff turnover and she has added that to the review of the State Services Commissioner. She is using the review of these events to go on a trawl looking for anything else. It is my opinion that Feeley's position is untenable."
Feeley apologised to Collins in 2011 for causing "unnecessary embarrassment" after popping open a bottle of wine from the office of failed finance company Bridgecorp at a SFO staff party.
The email from Slater is understood to have been addressed to, among others, Mark Hotchin, director of failed finance company Hanover Finance.
The SFO was investigating Hanover Finance, which collapsed in 2008 owing investors about $500 million.
Feeley said today he was confident the investigation into Hanover Finance wasn't compromised. The SFO had always made decisions independently.
He had never detected any animosity from Collins, but whether she had been involved in any smear campaign did merit some sort of inquiry, Feeley told RadioLive.
"No-one would believe me if I said it wasn't a little bit tense for a period there, but overall [she was] no different to any other minister," he said on Newstalk ZB.
"I would like the truth to come out, if it hasn't already come out," he said.
He would not give more details on the alleged smear campaign until there was an inquiry and the truth came out.
Feeley would co-operate with an inquiry and would be "pleased" to find out what the facts were, he said.
The sole reason for his early departure from the SFO had been wanting to relocate his family to Queenstown, Feeley said.
"I loved working at the SFO, I had a great time, I left on my own terms," he said.
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