Mepa issued a stop notice against the Inland Revenue Department after some wooden windows were replaced by aluminium structures, the Prime Minister has confirmed in Parliament.
Dr Gonzi said internal refurbishment of Block IV at Floriana was covered by a permit issued in June.
But last December the Mepa enforcement section noticed that external aperatures were being replaced by aluminium structures.
The IR Department was ordered to stop the works immediately. A meeting between Mepa and IR Department officials was held last month when the nature of the replacement aparatures was discussed.
On January 20 the department submitted a notification notice to replace the aluminium structures with wooden ones.