The CBI today filed a closure report in the court of Delhi Tis Hazari Chief Metropolitan Magistrate, in one case pertaining to the death of Dr. Iqbal Singh Chadda, during riots following assassination of Mrs. Indira Gandhi, the then Prime Minister of India. <br/><br/>A CBI release issued in New Delhi said, during the investigation conducted by CBI, the complainant could not give any information as to where, when and who killed her husband Dr. Chadda and burnt his body. <br/>