Pakistan Sindh Top StoriesBlast rocks Frontier Colony of KarachiUsman KhanAugust 9, 2014August 9, 2014 by Usman KhanAugust 9, 2014August 9, 2014 KARACHI:Â A powerful explosion has been heard in densely populated Frontier Colony area of the metropolis on Saturday (today). Explosion took place near Metroville Hospital inside...