The police identified the accused as 30-year-old Abhishek Yadav, who was also involved in extortion.
According to police, Class XII pass out Yadav was fond of "wearing branded apparel, flaunting illicit weapons and wandering in a group, just to portray himself as a 'Dada' (Don)."
The probe agency said that a number of suspected hideouts in Delhi, Uttar Pradesh and Haryana were were raided and the accused was nabbed with a country-made pistol and one live cartridge on July 7 on a tip-off.