Police say preliminary investigation suggested that fog and overspeeding may have led to the accident, following which the car crossed a drain and fell into the pit.

The incident took place on Friday night near Sector 150, when the techie, Yuvraj Mehta, was returning home from work.

The techie, identified as Yuvraj Mehta, did not know how to swim. He displayed a valiant effort to stay afloat, getting out ...