KARACHI   - The Commissioner Karachi, Roshan Ali Shaikh, has directed the deputy commissioners of all the 5 districts in the City to launch a crackdown on the preparation and sale of the fireworks. He said that under section 144, ban on preparation and sale of fireworks be ensured for 15 days. He said that the manufacturing of fireworks in populated areas as well as their godowns be eliminated to avoid casualties. He also called for action against those involved in preparing and storage of fireworks.