Flooded areas are pictured on the outskirts of Chennai, India, December 2, 2015. The heaviest rainfall in over a century has caused massive flooding across the southern Indian state of Tamil Nadu, driving thousands from their homes, shutting auto factories and paralysing the airport in the state capital Chennai. (Photo by Reuters/Stringer)





People stand on a flooded road in Chennai, India, December 2, 2015. (Photo by Reuters/Stringer)





People travel on a boat as they move to safer places through a flooded road in Chennai, India, December 2, 2015. (Photo by Reuters/Stringer)





A man stands next to a flooded railway track as it rains in Chennai, India, December 2, 2015. (Photo by Reuters/Stringer)





A man carries a girl through a flooded road in Chennai, India, December 2, 2015. (Photo by Reuters/Stringer)





A man walks through a flooded residential area in Chennai, India, December 2, 2015. (Photo by Reuters/Stringer)





People travel on a boat as they move to safer places through a flooded road in Chennai, India, December 2, 2015. (Photo by Reuters/Stringer)





People travel on a boat as they move to safer places through a flooded road in Chennai, India, December 2, 2015. (Photo by Reuters/Stringer)





A man carries a dog and wades through a flooded street in Chennai, in the southern Indian state of Tamil Nadu, Wednesday, December 2, 2015. 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 Wednesday. (Photo by AP Photo)





Rescue workers carry food in a boat to distribute to people trapped in a flooded residential area in Chennai, in the southern Indian state of Tamil Nadu, Wednesday, December 2, 2015. (Photo by AP Photo)





A young Indian woman walks under an umbrella through floodwaters in Chennai on December 1, 2015, during a downpour of heavy rain in the southern Indian city. (Photo by AFP Photo/Stringer)





An Indian labourer pushes his cycle trishaw through floodwaters in Chennai on December 1, 2015, during a downpour of heavy rain in the southern Indian city. Heavy rains pounded several parts of the southern Indian state of Tamil Nadu and inundating most areas of Chennai, severely disrupting flights, train and bus services and forcing the postponment of half-yearly school exams. (Photo by AFP Photo/Stringer)





An Indian man clings to a rope as he makes his way through floodwaters in Chennai on December 2, 2015. India has deployed troops to Tamil Nadu and closed the main airport there after heavy rains worsened weeks of flooding that has killed nearly 200 people in the southern coastal state. Thousands of rescuers carrying diving equipment, inflatable boats and medical equipment were battling to evacuate victims across the flooded state, officials said. (Photo by AFP Photo/Stringer)





Indian bystanders and travellers gather as floodwaters lap at the end of a highway in Chennai on December 2, 2015. (Photo by AFP Photo/Stringer)





A man leads an elderly woman past a flooded street in a residential area in Chennai, in the southern Indian state of Tamil Nadu, Wednesday, December 2, 2015. 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 Wednesday. (Photo by AP Photo)





A National Disaster Response Force person, right, arrives to rescue a boy who fell while wading through flood waters in Chennai, India, Thursday, December 3, 2015. The heaviest rainfall in more than 100 years has devastated swathes of the southern Indian state of Tamil Nadu, with thousands forced to leave their submerged homes and schools, offices and a regional airport shut for a second day Thursday. (Photo by AP Photo)





People carry children on their shoulders and wade through flood waters in Chennai, India, Thursday, December 3, 2015. (Photo by AP Photo)





Indian army soldiers rescue a man from flood waters in Chennai, India, Thursday, December 3, 2015. The heaviest rainfall in more than 100 years has devastated swathes of the southern Indian state of Tamil Nadu, with thousands forced to leave their submerged homes and schools, offices and a regional airport shut for a second day Thursday. (Photo by R. Senthil Kumar/Press Trust of India via AP Photo)





Volunteers rescue flood affected people on a country boat from a residential area in Chennai, India, Thursday, December 3, 2015. (Photo by AP Photo)