The tribunal was hearing a plea filed by Daryaganj resident Mohd Shariq seeking action against illegal factories in the area and demanding sealing of such units in non-conforming areas.
The plea, filed through advocate Gaurav Bansal, has also sought directions to initiate criminal proceedings against those running such unauthorised units.
It claimed that despite issuance of several letters by Public Grievances Commission of Delhi and Delhi Pollution Control Committee, the North Delhi Municipal Corporation has failed to stop operation of illegal factories.
Irked over the menace of unauthorised industrial units running in residential areas here, the NGT had earlier directed the Centre and Delhi Government to close all such units immediately.
The green panel had directed the Delhi government to ensure implementation of a 2004 Supreme Court verdict ordering closure of industrial units in non-conforming areas and had ordered discom BSES and Delhi Jal Board to immediately cut electricity and water supply to such units.