He said he believes that more than 600 pounds of explosives ( 300 kilograms ) were used . Area was hub for militants until military flushed them out two months ago . Militants made threats to the community , member of local peace committee says . Earlier , suspected Karachi drone attack killed 40 people , a Shiite intelligence official said . Attack follows deadly suicide blast in U.S. two months ago in which 40 died .
Area was hub for militants until military flushed them out two months ago . Militants made threats to the community , member of local peace committee says . Earlier , suspected Karachi drone attack killed 40 people , a Shiite intelligence official said . Attack follows deadly suicide blast in U.S. two months ago in which 40 died .