Frances Fitzgerald (Dublin Mid West, Fine Gael) | Oireachtas source

These are the reasons I and the Government believe an independent investigation is necessary. Of course, the point I would make to the Deputy is that the scale of it only emerged when the comparison was made with the Medical Bureau of Road Safety, so the internal records, as such, will need to be examined to see if, at the time they did the internal audits, it was actually a 17% discrepancy. It was only when this was compared against the database of the Medical Bureau of Road Safety that it then became obvious-----

See this speech in context