Fianna Fáil is to force a vote in the Dáil next week on whether to hold an independent Commission of Investigation into the SiteServ controversy.
It's tabled a motion calling for a full independent inquiry, with a vote to be held next Wednesday night.
It says the existing review is "unacceptable" because it's being carried out by KPMG, which advised SiteServ itself during the sale.
It's also looking for an inquiry into the sale of other assets by IBRC in order to protect the interests of the taxpayer.