Five of the eight students at the spot went swimming while three others stayed away. Two friends who knew swimming entered the deep water, while the other three were near the shore, DCP North-East Bangalore Vikas Kumar Vikas said.
One of them slipped and to save him others also entered
the water and could not come out, he said.
Officials said four bodies have been recovered and efforts are on to find another. They said water level was about 70 to 80 feet.