In Chennai, battered by floods, the rain may be receding, but hard questions are surfacing over whether this was a manmade disaster. The state government blames the floods on the intensity of rain. An NDTV investigation traces the real reasons for why South Chennai, worst hit by the rains, went under water: crucial water bodies built over and lakes encroached. Who is culpable? Is reckless growth and unplanned construction responsible?