Claiming that Das had a controversial track record, the senior BJP leader said the officer exceeded his jurisdiction by writing a letter to the IG (Special Branch) J S Gangwar for intimation to Intelligence Bureau (IB) about newly-appointed union minister's alleged links with the outlawed Ranvir Sena.
The state government must take note of the Bihar Human Rights Commission (BHRC) SP's "misconduct and breach of service rules" and suspend him with immediate effect for making baseless allegations against the BJP Lok Sabha MP from Nawada, he said.
The veteran BJP leader said he will speak to the party MPs from Bihar and explore option of initiating privilege motion against the police official in the Parliament.
Meanwhile, BHRC (Bihar Human Rights Commission) Chairperson Justice (Retd) Bilal Nazki has served show cause notice on Das for writing a letting to the IG (Special Branch) alleging Singh's links with the private militia and asked him to reply within seven days.
Singh, who has been appointed as Minister of State for Micro, Small and Medium Enterprise, could not be reached for his comments on the issue.