Was Mary Harney protecting Ansbacher account holders?

I often wondered why then minister and leader of the Progressive Democrats, Mary Harney, suddenly shut down the Ansbacher investigation in 2004.

Perhaps the following question, put to Enda Kenny by Sinn Fein’s Mary Lou McDonald, explains Harney’s decision.

Do you believe Mr. Ryan (the whistleblower) when he says that his investigation that was shut down by Mary Harney when he uncovered names of senior politicians from the Progressive Democrats, Fianna Fail and Fine Gael, that they held offshore accounts, revelations that would have been most uncomfortable for the political establishment?