The deceased, identified as Ravi, was earlier involved in several cases of robbery and theft in the area.
Ravi's wife claimed she was an eyewitness in the case and had her statement recorded. Police said they have identified all three assailants who carried out the attack last night and a team has been constituted to track them down.
One of the assailants was a person with whom Ravi had got into a scuffle around five months back and preliminary inquiries suggest that the killing was the fallout of a personal rivalry, police added.
Last night, around three persons approached on a motorbike as Ravi was closing his shop and opened fire, they said.
Ravi, who sustained five bullet injuries in the attack, was rushed to a private hospital where doctors declared him dead, the official said, adding that a case of murder has been registered in this regard.
