The internecine feud in the CBI turned murkier on Monday with a senior officer M K Sinha dragging the names of National Security Advisor (NSA), Ajit Doval Union Minister Haribhai Parthibhai Chaudhary and CVC K V Chowdhury over alleged attempts to interfere in the investigation against CBI Special Director Rakesh Asthana, who has been divested of his duties and sent on leave along with his boss.

K V Chowdhury did not respond to queries when his reaction was sought while Doval, the NSA, was not immediately available for comments. An official in the minister's office said he was not aware of the matter. Sinha, who was probing the FIR against Asthana, and important cases like the PNB scam involving Nirav Modi, made a litany of sensational allegations in his petition before the Supreme Court that sought urgent hearing for quashing his transfer to Nagpur. Advocate Sunil Fernandes, appearing for Sinha, informed a three-judge bench headed by Chief Justice Ranjan Gogoi that his client has "got some shocking revelations" in his petition and sought urgent listing and hearing on Tuesday along with the plea of CBI Director Alok Verma.