KARACHI- Former Sindh chief minister Mumtaz Bhutto today said that ‘Sharif brothers’ and Asif Ali Zardari were jointly looting the country. He asked ‘Sharif brothers’ to resign in view of the rigging allegations. He asserted that the country was at the verge of destruction with all its institutions disintegrated. He also blamed PML-N government for doing injustice to the people of Sindh.