Three men suffered bullet injuries after shots were fired following an altercation between five vendors in Shahdara's Geeta Colony area on Sunday evening, police said.
Before the incident, two of the vendors had a fight over an issue following which three more vendors joined them, they said.
According to police, one of them pulled out a pistol and shot at three men, who were rushed to a hospital and are said to be stable.
The prime accused have been arrested and the weapon has been recovered, a senior police officer said.
The other accused have been identified and some of them have been detained, the officer added.
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