8 At the outset, Dr. Suresh placed strong reliance on the judgment of the Constitution Bench of the Supreme Court in Lalita Kumari vs. Government of Uttar Pradesh and others [(2014) 2 SCC 1] and submitted that when once a complaint disclosing commission of a cognizable offence is given to the police, they have to necessarily register an FIR and only thereafter, proceed with the investigation. In this case, enquiry done by the Deputy Superintendent of Police, Sriperumbudur, without registering a formal FIR stands vitiated and therefore, a positive direction, as prayed for, should be given. He built up his arguments by laying emphasis on the statement of law in paragraphs 83,96,97,106 to 109 and submitted that the police have no other option but to register an FIR when the complaint discloses commission of a cognizable offence and that they cannot conduct preliminary enquiry. He also submitted that mere registration of FIR will not ipso facto lead to the arrest of the accused, inasmuch as the Supreme Court itself has dealt with this aspect in paragraph no.109 which reads as under: