Indians stand on the terrace of residential buildings waiting for food and relief material, with the Adyar River in the foreground, in Chennai, in the southern Indian state of Tamil Nadu, yesterday. Weeks of torrential rains have forced the airport in the state capital Chennai to close and have cut off several roads and highways, leaving tens of thousands of people stranded in their homes, government officials said yesterday. The threat of the river overflowing its banks has led to fears the flooding could worsen.