On April 30, gangster Monu Daryapur, his personal security officers -- Assistant Sub-Inspector Vijay Kumar and Constable Kuldeep -- and two others, Arun Shastri and Yogesh, were attacked by armed assailants at outer Delhi's Mianwali Nagar.
The armed men had fired indiscriminately at their car, killing Monu, Kumar and Shastri and injuring the other two.
Gangster Sonu Daryapur wanted to kill Monu since the latter had married his cousin.
On July 28, the police received information about three men involved in the Mianwali Nagar shootout coming to Rohini to meet one of their associates, said Deputy Commissioner of Police (Special Cell), Sanjeev Kumar Yadav.
More From This Section
The three -- Sonu alias Kejriwal (25), Sumit alias Palotra (22) and Sandeep alias Padu (25) -- were arrested from near Bahadur Shah Marg, Sector 24-25 Rohini, he added.
A reward of Rs one lakh had been declared by the Delhi Police on their arrest. The Haryana Police had announced a reward of Rs 25,000.
The accused confessed that they belong to a joint gang of Sonu Daryapur and Rajesh and have been involved in several killings, said the officer.