At least eight people were killed and seven others including a police ASI injured in firing incidents in various areas of Karachi, raising the overall three-day death toll to 26, report said on Wednesday. According to police sources, Karachi firing incidents killed at least eight people since last nightfall. The latest mishap occurred in Landhi locality of Awami Colony, where unidentified attackers gunned down a 40-year-old man. A 24-year man Gul Muhammed was shot down on reported personal enmity in Metroville Site area.