Blog: A Former CBI Boss Analyses Delhi's Mass Hangings: It Wasn't MurderAP Singh | Wednesday July 04, 2018 Until we find strong evidence to the contrary, it appears to be a case of mass suicide.Former CBI Boss Examines The Investigation In Pradyuman MurderAP Singh | Saturday November 11, 2017 Irrespective of the result of the investigation, the safety of children in our schools is of paramount importance and must be ensured.Opinion: Aarushi-Hemraj Case: Murder Of The Millennium - By Ex CBI Boss AP SinghAP Singh | Monday October 23, 2017 The Aarushi-Hemraj case is among the few murder investigations which, unfortunately and despite the best efforts of the CBI, could not be brought to a satisfactory conclusion.