The chairman of the Public Accounts Committee has demanded an unprecedented public apology from the former CEO of the Central Remedial Clinic (CRC).

John McGuinness says claims by Paul Kiely about the management of the clinic pension fund were totally misleading.

The Committee has today been told that the payments made by the CRC to the Mater Hospital are actually the employer's contribution to staff pensions.

Deputy McGuinness says the former CRC directors have cast a grave shadow over the actions of the clinic.

The PAC is also to hold an emergency hearing with NAMA before the Christmas break.

TDs have agreed to hold an extra hearing with NAMA officials to deal with allegations of sensitive information being leaked to investors.

 Committee chairman McGuinness says NAMA are keen to deal with the reports before the Christmas break.

And he says he wants to bring in NAMA officials before the weekend to end the speculation.

The PAC is questioning HSE and officials from the Departments of Health and Public Expenditure on the top-up payments.

The Public Accounts Committee (PAC) is also due to receive a report from the Health Service Executive (HSE) this morning, outlining other agencies with similar salary arrangements to the Central Remedial Clinic (CRC).

It comes after a number of anonymous whistleblowers came forward.

It comes following reports this morning that St. Vincent's Hospital in Dublin has refused to give the HSE details of private allowances for senior executives.

The HSE is carrying out an audit into top-up payments, and the Irish Times says the hospital refused on the basis that the money involved did not come from public funds.

Industry Correspondent with the Irish Times Martin Wall told Breakfast here on Newstalk that representatives from St. Vincent's are likely to be called to appear before the PAC in January.