NEW DELHI: Delhi Chief Minister Arvind Kejriwal 's key IAS official, Chetan Sanghi, who probed irregularities at the DDCA , wrote to the union Home Secretary Rajiv Mehrishi a fortnight ago alleging "pressure from various stakeholders" during the probe since the subject was "controversial". His letter was sent seeking a central deputation from which he is debarred at present.Detailing the complaints received by him from "yesteryear cricket luminaries" and others, Sanghi claims, "There was considerable emphasis on naming who were at fault and in particular a certain VIP. But since the formal mandate was not to do so a very tight rope walk was taken. The short time frame of three days also didn't particularly help matters." Sanghi does not name who pressurised him. Officially, he has been on a long leave from service with the Kejriwal govenment.The purpose of his letter, says Sanghi, is to bring to the notice of Mehrishi "cetain developments" which took place after his deputation to Delhi in June 2015, and also point to last year's decision of the department of personnel and training to debar him from joining the central government. Detailing the tense period of investigating DDCA and subsequent, he also mentions two FIRs filed against him during his tenure at the DSIIDC. He says the investigation can be closed because the ACB has "received the requisite information" from the DSIIDC and "no case can be made out".Sanghi is an AGMUT cadre IAS official and his cadre controlling authority is the Home Ministry. This letter to the home secretary, sources say, is his way of buying peace with the Centre which has been at loggerheads with Kejriwal government over probe into the DDCA's financial irregularities. Politics over this has already begun with the BJP's opposition leader in Delhi assembly, Vijender Gupta alleging that credible sources have told him about AAP spokesperson Rahul Mehra put "undue pressure" on Sanghi "on behalf of top leadership of the AAP government to add names in the report with an aim to gain political brownie points once the report goes public."