At the heart of the CBI maelstrom is a tale of bloated egos, hurt pride and personal rivalries. The No. 2 and No. 4 of the agency had axes to grind against each other. No. 1 also fell out with No. 2 over time, splitting the organisation. No. 1 and No. 4 then came together against No. 2.
No. 2 Rakesh Asthana and No. 4 A.K. Sharma are Gujarat-cadre IPS officers. But the grapevine has it that they did not like each other. They carried their hostility to Delhi when they found themselves as colleagues in the CBI. Sharma came to the CBI in April 2015.