The Crime Branch unit six Saturday arrested two Uttar Pradesh-based gangsters,who were on the radar of the UP police for allegedly killing a constable inside a court in Mainpuri,from Mankhurd in suburban Mumbai. Police said Rishikesh Rajput (33) and his brother Chandrakumar Rajput (36) were arrested by Mainpuri police in a double murder case in 2011. On January 31,they fled police custody after killing the constable who was escorting them to court in Mainpuri. They arrived in Mumbai last month and had been hiding at Deonar Municipal Colony opposite Atlanta Garden ever since,said an officer. On Saturday morning,the Crime Branch received a tip-off that the two were going to visit Atlanta Garden. They laid a trap with the help of the UP STF officers. When the two approached the garden,we asked them to surrender. However,the two fired in our direction but we were prepared and nabbed them before they could fire another round, said Shripad Kale,senior inspector,Crime Branch unit six. Police recovered a pistol,eight rounds and two empty shells from the two. We will hand them over to the UP police after they are presented in court, said Kale. Police said Chandrakant is a lawyer,while Rishikesh is a real estate agent.