The gun attack took place in a residential area near a police station in Nazimabad No 4 area of the city. A Rangers station is located merely half a kilometer from the attack site.
According to police, two gunmen riding a bike entered a street in Nazimabad and attacked a majlis (Shia religious gathering) which was under way in a tent.
Rescue officials confirmed that five people perished in the firing incident. Those killed or injured in the attack were shifted to Abbasi Shaheed Hospital.
Police and Rangers reached the scene, cordoned off the area and launched a probe.
Initial probe suggests that there were four attackers. Two assailants targeted the male participants of the majlis while their accomplices gave them a cover.