Latest: Taoiseach admits national children's hospital may cost more than €1.433bn

Update 4.56pm: Taoiseach Leo Varadkar has admitted the new national children's hospital may cost even more than its latest €1.433bn predicted price amid growing concern over the runaway budget involved.

Mr Varadkar said "it is possible" the spending crisis may get even worse as he confirmed officials from the group overseeing the project will be made available for any public accounts committee or health committee grillings.