Auction Alliance said on Tuesday an independent investigation into alleged corruption will be thorough after allegations leveled against embattled boss Rael Levitt.
It is alleged staff at some banks were paid large sums of money to ensure the auction company received preferential treatment.
Bruce Sneddon and Peter Moyo issued a joined statement that claimed the quality of the investigation into the corruption claims would not be compromised.
Sneddon and Moyo are running the organisation temporarily following Levitt’s resignation in February.
The two said all Auction Alliance employees were encouraged to come forward if they had any knowledge or evidence of wrongdoing.
They said they had already made changes to what they called the company's 'internal governance procedures’.
Sneddon and Moyo said the scandal left the company enormously embarrassed.