Two men, a doctor and a soldier, have been shot dead in fresh violence in Pakistan's volatile city of Karachi. The killings bring to 16 the number of people who have died in such shootings in the southern port city since 1 June. The two men killed in the attacks appeared to have been targeted because they were Shias. The city's main Shia organisation announced that it will hold protest rallies against the killings today, despite a ban by the government.