The CBI had approached the apex court challenging the anticipatory bail granted to Kumar in connection with the multi-crore-rupee Saradha chit fund scam.
The central agency has given multiple notices to Rajeev Kumar, to appear before it for questioning as a witness in the multi-crore scam.
The CBI said Rajeev Kumar was breaking the law as he is evading summons of the investigation agency after the Calcutta HC withdrew protection granted to him from arrest last week.
Mitra said that if Rajeev Kumar is arrested by CBI and he talks, several influential people will be in trouble.
The Supreme Court had on February 5 prevented the CBI from taking any coercive action against Rajeev Kumar and directed him to cooperate with questioning at a "neutral place".
The CBI is trying to locate Rajeev Kumar and has even written to the West Bengal DGP and the chief secretary to instruct Kumar to appear before the probe team.
It said Kumar may move the court of Barasat district sessions judge with his application.
The saffron party which won 18 out of a total of 42 Lok Sabha seats in Bengal, only four less than TMC's tally of 22, is eyeing to deseat Banerjee's party in the 2021 state polls.
In the petition submitted before the high court, the CBI alleged Kumar was not cooperating with the agency and his custodial interrogation was required.
In February, I had agreed to appear before the CBI after the session was over, but the CBI chose not to meet me, said the TMC spokesperson.
The agency wants custodial interrogation of Kumar in connection with the chit fund scam as he was heading the police's special investigation team to probe the case before the CBI took over.