The accident occurred when the speeding motorcycle of Netra Pal (21), a resident of Nagal Bari, collided with a tree while negotiating a curve. After the impact, the four youths, travelling by the same motorbike, lost balance and fell in the drain, Dy SP Vaibhav Sharma said.
While Suraj, Ravikumar and Netra Pal lost their lives owing to suffocation in the drain, Rahul was rushed to a hospital, he said.
The family members told police that all the four youths were proceeding to Mat for picnic.