An old three-story building had collapsed in congested Gulbahar residential area of Karachi yesterday. <br />'' <br />'' The death toll has today reached 18, including 11 women, 2 men and 5 children, as rescuers pulled out more bodies from the rubble.<br />'' <br />'' Around 20 people rescued from the rubbles had been brought to the Abbasi Shaheed Hospital and were being treated for injuries.<br />'' <br />'' Karachi Mayor Wasim Akhtar said that the initial inquiry had shown that the top floor of the building was constructed illegally.<br />''