Five people, including two women, were killed in two separate incidents on Friday night.
According to Naushehro Feroze SHO Abdul Manam Larik, accused Hassan Mari killed his cousin Seema Mari and Muhammad Saleem Phul at village Allah Bux Mari near Naushehro Feroze, over Karo-Kari.
Police shifted the bodies to the civil hospital for medico-legal formalities.
Police arrested accused Hassan Mari and further investigation is under way.
Meanwhile, in another Karo-Kari incident at Tando Mir Ali, in the jurisdiction of Pir Wasan police station two accused, Akber Ali and Zahid Ali, allegedly killed their sister Nazia Kausar and her 9-month daughter Tanzela and a servant, Irshad Ali, at their house.
Police shifted the bodies to taluka hospital Thari Mirwah.
Police arrested both accused and began probe.
