A former student of Shahjalal University of Science & Technology drowned while taking bath at a waterfall in Mirsarai upazila of Chittagong on Tuesday.The dead man is Animesh Dey, son of Nironjan Kumar Dey, of Oxygen area in the port city.According to source, Animsh along with his two other friends went to visit the waterfall and started taking bath at Napitta Chara, but suddenly he felt into a ditch from 30-40 feet high at 3:30pm and could not come out from there.Later Mirsarai Fire Service and Civil Defense along with divers from Chittagong recovered the body at around 7:30 PM.