(1) RIZWANUR Rahman (hereafter Riz), since deceased, son and brother of the petitioners 1 and 2 respectively, was laid to rest in September last. The suspicious circumstances in which he died, the role of the State Police agencies in investigating the cause of his death, the conduct of certain police officers of kolkata Police both before and after his death, alleged involvement of his fatherin-law Ashok Todi (respondent no. 12) and his uncles-in-law Anil Saraogi (respondent no. 13) and Pradeep Todi (not a party to the petition) in connection with his unnatural death, investigation conducted by the Central Bureau of investigation (hereafter the CBI) being directed by this Court - all these and much more, have exercised thoughtful consideration of this Court on the face of eloquent arguments advanced by learned Senior Counsel for the petitioner, the state, the accused police officers and the respondent no. 12 and learned Counsel for the CBI and the respondent no. 13, both on factual as well as legal points, based on erudition and developed by great industry. The valuable assistance rendered to the Court needs to be appreciated at the outset. It is discerned from the mater