<p>At least seven people were killed and eight injured on Sunday after a gas pipeline exploded in the Bangladeshi port city of Chittagong, a police official said.</p>.<p>The gas pipeline exploded in front of a five-storey building, blowing walls off the building, local police official Mohammad Mohsin said, citing witnesses.</p>.<p>The injured have been taken to hospital, he said, adding rescue operation was underway.</p>
<p>At least seven people were killed and eight injured on Sunday after a gas pipeline exploded in the Bangladeshi port city of Chittagong, a police official said.</p>.<p>The gas pipeline exploded in front of a five-storey building, blowing walls off the building, local police official Mohammad Mohsin said, citing witnesses.</p>.<p>The injured have been taken to hospital, he said, adding rescue operation was underway.</p>