Twenty-six-year-old Dileep, a second-year LLB student, had reportedly gone to a restaurant for a meal in Karnalganj along with two friends on Friday. An altercation broke out between Dileep and few persons, outside the eatery.
The men soon started assaulting Dileep with bricks and sticks, leaving him seriously injured.
Two days later, he succumbed to his injuries.
The entire CCTV footage of the incident has now gone viral on social media.
On the basis of a complaint lodged by Dileep's brother, an FIR was registered against three unidentified accused, Senior Superintendent of Police (SSP) Akash Kulhari said.
Based on the footage, the cops have arrested one accused.
The prime accused was identified as Vijay Shankar Singh who is posted as a Train Ticket Examiner (TTE) with the Indian Railways, Kulhari said, adding that the accused is still at large.
Restaurant owner Amit Upadhyay, who's familiar with the main accused, has also been arrested. He had failed to inform the police about the incident, said the authorities.
The body has been sent for post-mortem and further probe into the matter is on, the senior official said.
With agency inputs