At least nine people, including a head police constable, were killed Thursday in various acts of violence in Karachi, Pakistan, officials said. Police Constable Nazeer Ahmed was killed near Karachi\'s al-Aasif square when an unidentified person opened fire at a police car, Dawn News reported. In another incident, an unidentified person opened fire in Orangi No. 4 area of Karachi, killing two relatives. Three men were shot and killed in areas of Sohrab Goth\'s Super Market. A man was killed in Keemari\'s Sikanderabad area and another man died in firing incident in Surjani town\'s Khuda ki Basti area. And, a woman was fatally shot in Rehri Goth in the Landhi area of Karachi.