The dispute over the licence for work at Dublin's Carrickmines castle to make way for a motorway will reach the Supreme Court today.
However, Dun Laoghaire-Rathdown County Council are denying claims being made that their work is being carried out without a valid licence.
Yesterday, Green Party TD Ciaran Cuffe made a complaint to gardai that workers may be breaking the law by resuming work on the site without the appropriate permit.
This call followed a claim from the National Museum that the Council was operating without a licence.