The CM said all the arrested suspects had confessed their crime.
Earlier, speaking in the Sindh Assembly session, the CM said four suspects of the attaack have been identified with the help of eyewitness and other investigation.
He said the incident could never be forgotten as several innocent lives were lost in its wake.
Shah said the operation against criminals was going will full force in the province. He vowed to continue anti-terror operation until elimination of last terrorist.