New Delhi, Feb. 9 -- The National Green Tribunal (NGT) has sought responses from multiple civic and administrative authorities in Delhi regarding allegations of illegal construction activity on the floodplain of the Yamuna River, noting that the matter raises substantial questions about compliance with environmental norms.

A Principal Bench of the Tribunal, comprising Chairperson Justice Prakash Shrivastava and Expert Member Dr A Senthil Vel, issued notices to the Municipal Corporation of Delhi (MCD), the concerned District Magistrate, the Delhi Development Authority (DDA), and the Delhi Pollution Control Committee (DPCC), calling the authorities to submit their replies by way of affidavits.

The Tribunal specifically directed the Distri...