Some activists of Bangladesh Chhatra League (BCL) of Shajalal Science and Technology University (SUST) unit beat up a student, leaving him injured, on Thursday evening over trifling matter. The victim was Ali Hasan, a student of fourth year in Bangla department of the university. Campus sources said on Thursday two BCL leaders Raju and Oshim locked an altercation with Ali Hasan over sitting on a university bus. Later, the duo beat up Ali Hasan in front of the university gate. The injured student was sent to Sylhet Osmani Medical College Hospital for treatment. Kamrujjaman Chowdhury proctor of the SUST confirmed the matter.