The Chief Executive of an engineering company, whose sale was the subject of a review by the Department of Finance, has said that the deal was completely above board.

Minister for Finance Michael Noonan confirmed yesterday that his department carried out a review of the role of IBRC- the successor to Anglo Irish Bank - in the sale of the company Siteserv.

Mr Noonan was responding to a question from Independent TD Catherine Murphy.

Siteserv was bought for €50m three years ago by Millington, a company controlled by businessman Denis O'Brien, after over €100m of its debts to Anglo Irish Bank were written off.

Deputy Murphy has said she is concerned as to whether this was the best deal for the taxpayer and about a number of unusual things connected with the sale.

This includes the fact that the same law firm was used by both the seller and the purchaser and that fact that payments were made to shareholders.

Minister Noonan said yesterday that the Department of Finance had conducted a review of the sale and said he had been assured the transaction was managed to achieve the best result for the State.

The Chief Executive of Siteserv, Sean Corkery, said today he was fed up of the constant questioning from Deputy Murphy and that said that the sale had been a "proper deal, a good deal and the taxpayer came out the right side of it."

Mr Corkery said that it was commonplace for business transactions to sometimes involve the same law firm and that the appropriate controls had been put in place to ensure information was not passed between the different teams involved.

He said the issue of shareholder payments was a matter for IBRC but said he understood it was necessary to ensure the sale of the company.