Further details have been released about the cost of last year's inquiry into the actions of former Cabinet Minister Judith Collins.
Ms Collins was investigated, and cleared, over allegations she'd been involved in efforts to undermine former Serious Fraud Office head, Adam Feeley.
Details obtained under the Official Information Act reveal the investigation cost over $490,000 dollars.
$156,000 was spent on operating costs, almost $145,000 on legal expenses, and just under $50,000 on personnel expenses.
The head of the inquiry, Justice Chisholm, received over $71,000 in fees.
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