The investigating police team laid their hands to this crucial piece of evidence from Charu's another residence in Borivili, soon after the Mumbai crime branch started a parallel probe.

Charu would jot his personal day-to-day schedules in the diary. Two diaries of 2012 and 2013 were found in which he had even mentioned about the happenings in office. And in one of the page he had even written notes and named some TATA steel officials in these pages.