Four people were shot dead in acts of violence and firing in different parts of Karachi, according to a report of Pakistan's Dunya News Channel. Giving details of the incidents, the Dunya News Channel said some unidentified persons opened fire in Federal 'B' Area, critically injuring two people. The injured were rushed to Abbasi Shaheed hospital where one of them succumbed to his wounds. In another act of firing in the same vicinity, a man was shot dead while another received critical injuries. Two more people were shot dead in Karimabad and Sohrab Goth areas respectively.