NEW DELHI: CBI director Ranjit Sinha on Thursday told TOI a conspiracy was being hatched against him, hinting that he was being targeted for taking action against "top people" in the country."I have taken action against powerful people in high profile cases including Intelligence Bureau officers in cases like Ishrat Jahan fake encounter, against corporate executives, government departments, banks and other agencies. Has anyone touched people at that level ever before," he asked.Sinha dismissed claims that a visitors' register was maintained at his 2, Janpath residence. He laughed at the question, saying, "It is funny because no such register is officially maintained by us. If somebody else (any other agency) sits outside my house and makes records of who is visiting me, then they should be asked the questions. Look at those entries. Do they even look like official visitors' entries? Has any visitor signed in the register? Who was maintaining these records and how have these reached Prashant Bhushan?"Sinha added, "It should be asked how such registers are reaching the petitioner because as far as CBI is concerned, we are exempted from sharing information with individuals, even under RTI Act."The CBI has decided to file a petition in Supreme Court seeking initiation of perjury proceedings against two NGOs that have brought up the visitors' entries at his official residence."Director, CBI Ranjit Sinha, on the basis of legal advice, has decided to file a case of perjury for malicious, deliberate and intentional false statement made before the apex court," a CBI spokesperson said.