First, an important document was found lying on a photo- copier machine one morning about eight months ago in the Ministry, soon after the new government led by Prime Minister Narendra Modi assumed office.
The suspicion grew further when the door of a director's room was found to be compromised and a thorough probe was launched to catch those transporting 'secret' documents out of the Ministry, culminating into what is now being talked about as a major crackdown on a suspected 'corporate espionage' ring with a dozen arrests already.
What has surprised many is the modus operandi of breaking into the rooms late in night with the help of duplicate keys and ID cards. However, one of the main accused Shantanu Saikia has now claimed that it was a Rs 10,000-crore scam and he was only doing the "cover-up" job.
While refusing to identify the specific instance that led to the probe, Oil Minister Dharmendra Pradhan told PTI, "We had discomfort (over a certain incident) and the competent authorities were informed."
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Locks have been changed for all rooms since then and the Ministry is now also strictly adhering to the Standard Operating Procedure (SOP) of handing critical information.
"Any secret file or document has to be hand-delivered or sent in a sealed envelop," Oil Secretary Saurabh Chandra said.
Besides, it has been decided that many other standard drills will also be followed in "letter and spirit".
"There is an SOP. That has to be strictly adhered to, right from my office to down below," Pradhan said.