Police arrested two members of Dhaka University based "Proloy gang", whose members allegedly assaulted a fellow student inside the campus on Saturday evening.
The arrestees are Naimur Rahman Durjoy, a student of Kabi Jasimuddin Hall, and Faysal Ahmed Sakib, a student of Muktijoddha Ziaur Rahman Hall.
Nur Mohammad, officer-in-charge of Shahbagh Police Station, said they arrested the two students after mother of the victim Zubaer Ibne Humayun filed a case last night with Shahbagh Police Station accusing 19 students of the university.
On Saturday evening, Zubaer, a student of the criminology department and leader of the social science faculty's BCL unit, was beaten up by the gang members.
According to witnesses, a speeding car splashed muddy water on Zubaer while he was talking to his friends near the faculty building on Saturday evening.
This prompted Zubaer and his friends to chase down the car near Tin Netar Mazar area for an explanation, initiating a quarrel with those inside the car, they said.
According to Zubaer, about an hour later, he was asked to come to Kabi Jasimuddin Hall area over phone. When he reached there, a group of around 15 students attacked him with sticks and cricket stumps. Some of them whipped him with their leather belts.
Witnesses said the attackers are also BCL activists.