The first incident occurred near Gul Plaza, Saddar area where unknown armed miscreants waylaid police mobile and opened fire. As a result, two cops sustained bullet wounds and died on the spot. One of the deceased cops was identified as assistant sub-inspector Riasat.
Two policemen Rashid Ali and Jahanzaib also suffered serious wounds in the firing.
In another incident, cop Muhammad Saleem was killed near Pakistan Chowk area within the remits of Arambagh Police Station. One of the cops who was injured in firing succumbed to his injuries after half an hour.
In both the shootings, criminals easily escaped from the scene.
Additional IG Sindh Ghulam Qadir Thebo said the latest firing incidents were a reaction of terrorists against police operation.