According to Loni Border SHO Ranveer Singh, acting on a tip-off, a police team arrested Sanjay Gurjar near Shanti Gate.
The accused allegedly gunned down Sameer Sharma on May 11 at Jawahar Nagar Gulab Vatika and Praveen Mittal alias Chinoo near Indira Puri on May 26, he said.
The accused had also fired several rounds outside a shopping mall in Kaushambi on May 13 to spread terror in the area, the SHO said, adding that the entire episode was captured by a CCTV camera.