The Supreme Court on Thursday directed the Central Pollution Control Board to file a comprehensive affidavit on the “character and content” of reported contamination of ground water in Bhopal's Arifnagar area due to the 1985 Union Carbide gas tragedy.

A Bench of Justice Altamas Kabir and Justice J. Chelameshwar also asked the Board's counsel Vijay Panjwani to recommend measures to overcome the contamination and action to be taken in this regard.