1. Naveen Kumar, the Gunrunner
During the first three months of the investigation, one of the teams of the SIT kept tabs on more than 100 mobile phones of right-wing activists with criminal pasts. The monitoring room at the Criminal Investigation Department (CID) office looked like a call centre, with the several cops listening in on hundreds of calls.
In the first week of November, a call made to Naveen Kumar, the founder of right-wing organisation Hindu Yuva Sene, caught the SIT’s attention.
The SIT had got its first real lead.
After that, the SIT closely monitored every call made to his phone, but they led nowhere. The investigators soon deduced that Naveen Kumar was using another mobile phone and tracing it down became the next challenge.
The solution came from the database of calls they had stored. The cops mapped the changing locations of Naveen Kumar’s phone, and compared it with the locations of other phones travelling on the same route.
This is how they deduced Naveen Kumar’s other number.
The alternative number had only incoming calls and all of them were made from public telephone booths. All of these calls were from one man, whose voice the team was familiar with by now. He gave Naveen Kumar instructions, but in code.
During one of these calls, Naveen Kumar addressed the man as Praveen anna. Now the SIT had a second piece of the puzzle – Praveen.
To get to Praveen, the SIT decided to keep Naveen Kumar under human surveillance. He was trailed by cops. Three shifts, round the clock, from November to February, until he was finally arrested.