Chandranath Rath, a 41-year-old retired Air Force officer, was shot dead inside his vehicle at Madhyamgram on May 6, two days after the Assembly election results were declared. Rath, a 41-year-old retired Air Force officer, was shot dead inside his vehicle at Madhyamgram on May 6, two days after the Assembly election results were declared. According to the CBI, a key breakthrough came with the arrest of brothers Sagar Sonkar and Sahib Sonkar from north Kolkata. Officers alleged that although the two worked closely with Rath during the Assembly elections as BJP associates, they maintained deep-rooted links with leaders of the opposition camp. Sagar had earlier worked under a senior TMC minister until 2020, the agency said.