The injured were rushed to Sadar Modern Hospital.
Witnesses said around 1:30 pm two groups of BCL men attacked each other with sticks and stones on the campus. Later police rushed to the spot and controlled the situation.
College Principal Md Ilias Hossain said he was unaware of the reason behind the clash as it ensued suddenly with the two BCL groups making chase and counter-chase on the campus.
A sense of fear was prevailing among teachers and students of the campus after the incident, he said.
Meanwhile, district BCL President Md Saidur Rahman claimed that some newly enrolled students clashed in the name of BCL and no BCL member was involved in the attack.
Officer-in-charge of Sadar Police Station Yasinul Haque said BCL men clashed to establish their supremacy in the campus.