Haryana minister Randeep Singh Surjewala also sought to reject Khemka's reply terming it "cacophony of allegations and sensationalisation by vested interests".
The reactions of Tulsi and Soorjewala a came day after media reports about Khemka's allegation that Robert Vadra "falsified documents" for 3.53 acres of land in Gurgaon and "pocketed" large premium on a commercial colony license.
"The letter circulated to the media purporting to be the response of Khemka is high on rhetoric and low on facts and administrative propriety...Khemka forgets that his response necessarily has to be confined to the facts on record at the time of making order in the file," Tulsi, a former Solicitor General of the country said.
"He may be suffering from some delusion that he is the only honest Civil Servant," the lawyer added.
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Tulsi said that the committee came to four conclusions after examining the record contained in the relevant file.
"There was no under-valuation with regard to the controversial deal with DLF. Khemka attacked beyond his authority vested in law by cancelling the mutation of land," he said, while quoting from the committee conclusions.
"The cancellation of mutation on October 14, three days after he stood transferred, was administratively improper," he said.