( 1 ) THE present writ application is at the instance of a Medical Practitioner with prayers for issuance of a writ of Mandamus directing the Central Bureau of Investigation to take up the charge of investigation into the death of the petitioner's son Dr. Amitava Basu. It appears that the substance of the prayer made on behalf of the petitioner is for reopening cases wherein final reports have been substituted upon finding that the death of the petitioner's son was due to accidents drowning From the materials on record it appears that the applications for reopening of the cases are pending before the Magistracies of West Bengal as also, of Orissa (Annexures 'a' and 'b' to A/o. of K. Kanjilal dated 28. 11. 88 ). Mr. A. P. Chatterjee, appearing in support of the writ application, has strongly banked upon the provisions of section 173 of the Code of Criminal Procedure and has also draw the attention of this Court to various types of factual inconsistencies and anomalies which, 'according to him, establish unequivocally the perfunctory manner in which the investigations, ending with the final reports referred to above, conducted by the police authorities of the St