"On August 16 night, just as we reached an abandoned government hospital for rest after four days of non-stop work, the local police officer, villagers and NDRF (National Disaster Response Force) officials came to us, asking to save the life of a woman who had just given birth," he said.
Water level of the river Kali has been continuously rising and reached the danger level.
"The international community should get onboard so that the environmental balance is not destroyed," he said.
The incident took place in Kanpur Development Authority colony in the afternoon, when top floors of the seven-storey under-construction building started falling, Modak said.
Efforts to retrieve the body would continue on Wednesday.
Railways Ministry spokesperson Anil Saxena said several people have been rushed to nearby hospitals with injuries, and the casualties may go up.
Even as nature's fury is causing multitude of disasters in Uttarakhand and Himachal Pradesh, the Centre is yet to appoint head of the specialised 10,000- personnel strong NDRF, the mainstay for disaster mitigation and rescue operations in the country.
The picturesque landscape of Pettimudi was flattened into a rough patch of boulders and mud with parts of asbestos and tin sheets seen scattered around.
Taking note of large-scale deaths because of the heat wave in various parts of country, Prime Minister Manmohan Singh has asked a Group of Ministers to discuss and decide on its inclusion as natural calamity.