The Dail's Public Accounts Committee (PAC) is demanding answers from NUI Maynooth over the decision to write-off a €750,000 loan to a failed subsidiary company.

The Public Accounts Committee is seeking "immediate clarity" in any possible conflict of interest over professional services firm PwC which not only advised health chiefs on the children's hospital but also completed a review of the project.

More than 600 children under the age of four are living in Ireland's asylum seeker system.