Dr Narendra Dabholkar's killers had developed a code to communicate and hatch the murder plot, CBI has revealed. The agency said it found this out after coming across one such coded email exchange between the arrested mastermind, Panvel-based ENT specialist Dr Virendrasinh Tawde, and another wanted accused. So far, besides Tawde, the CBI has arrested Sachin Andhure, 26, one of the alleged shooters; the other alleged shooter is Sharad Kalaskar.

On Saturday, the agency also arrested Amit Digwekar, 33, and Ramesh Bangera. Digwekar was residing in a Goa ashram and was allegedly in contact with Dr Tawde, while Bangera gave weapons training to all the accused at five different places.