Some unidentified criminals stabbed a student of Chittagong University (CU) in his classroom yesterday.
The victim is Polash Kumar Roy, a masters student of political science department.
A gang of around eight criminals started beating Polash's classmate Yakub while he was chatting to his friends in Room No-205 of the department around 10:30am, said Khurshed Alam, another classmate of Polash.
Polash tried to save Yakub when the criminals attempted to stab him. Later, he sustained the stab injuries.
The criminals might have been hired from outside the campus, said Proctor Khan Towhid Osman.
Polash was undergoing treatment at Chittagong Medical College Hospital.