On the intervening night of August 29 and 30, the police were informed by one Sagar that three men came to an old woman's house in their neighbourhood for committing a robbery.
After hearing their noise, Sagar's father Suraj Prakash stationed himself outside the woman's house. As his father stood outside the house, two men came out of it carrying guns, the police said.
One of them was wearing a helmet and was also having a black bag in his hand. The helmet-wearing accused shot at Prakash and the other accused fired in the air, they added.
The CCTV footages from the area were analysed and it was found that the accused had fled towards Shaheed Nagar. On the basis of CCTV footages, one Wasim was nabbed.
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He led the police to his accomplice Bunty on September 7. Subsequently, the third accused, Sohail was arrested yesterday near DLF Mod, new Seemapuri here, the police said.
Sohail is Wasim's brother-in-law. Wasim met Bunty in a Jaipur jail where the duo was lodged in connection with separate cases of snatching around a year ago, the police said.
The local associates of Wasim gave him information that an old lady was residing in Old Seemapuri and they hatched a plan to rob her, said Deputy Commissioner of Police (Shahdara) Nupur Prasad.