India, Oct. 7 -- A blast took place in the basement of Tower A at Triveni Heights in Dwarka Sector 16B on Sunday evening when a combination of accumulated gases and high groundwater pressure cracked the ground, pushing it upwards and causing flooding in the area, the Delhi Development Authority (DDA) said on Monday.

The incident took place around 7.30pm, when residents noticed that the basement was filled with water and slabs of cement were scattered across the floor. "The ground was cracked, with slabs of cement scattered across the area. It was clear that an explosion had occurred, but we did not know what it was due to. We informed the police and the DDA, who both reached the scene quickly, along with the fire brigade," said B.G. Mish...