The UN has overpaid individuals, companies and Gulf States for losses in Iraq's 1990 invasion of Kuwait by as much as $5 billion.
Some 19 internal audits of the UN Compensation Commission (UNCC) relating to the compensation scheme were posted on its website on Monday.
The audits of the Geneva-based UNCC, carried out by the UN Office of Internal Oversight Services (OIOS) from July 1997 to December 2004, do not identify any corruption.
Volcker said in an interview published in the New York Times on Friday that the internal audits, while professionally done and very detailed, "don't prove anything".
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