‘Further investigation’ is where the Investigating Officer obtains further oral or documentary evidence after the final report has been filed before the Court in terms of Section 173(8). This power is vested with the Executive. It is the continuation of a previous investigation and, therefore, is understood and described as a ‘further investigation’. Scope of such investigation is restricted to the discovery of further oral and documentary evidence. Its purpose is to bring the true facts before the Court even if they are discovered at a subsequent stage to the primary investigation. It is commonly described as ‘supplementary report’. ‘Supplementary report’ would be the correct expression as the subsequent investigation is meant and intended to supplement the primary investigation conducted by the empowered police officer. Another significant feature of further investigation is that it does not have the effect of wiping out directly or impliedly the initial investigation conducted by the investigating agency. This is a kind of continuation of the previous investigation. The basis is discovery of fresh evidence and in continuation of the same offence and chain of events relating to the same occurrence incidental thereto. In other words, it has to be understood in complete contradistinction to a ‘reinvestigation’, ‘fresh’ or ‘de novo’ investigation.
Supreme Court of India
Vinay Tyagi vs Irshad Ali @ Deepak & Ors. on 13 December, 2012