NEW : Bomb blast kills two in Karachi . militants kill three people in Balochistan province in southwest Pakistan . In Karachi Sherani , men on motorcycles spray a vehicle with gunfire , killing three people . In Quetta , the provincial capital , militants kill two people who had been kidnapped .
NEW : Bomb blast kills two in Karachi . Gunmen kill seven people in Balochistan province in southwest Pakistan . In Loop Sherani , men on motorcycles spray a vehicle with gunfire , killing four people . In Quetta , the provincial capital , gunmen kill three people who had been kidnapped .