The overall activities of Chittagong University came to a halt on Wednesday as a faction of Bangladesh Chhatra League (BCL) enforced a blockade from the morning following an infighting between its two factions. Witnesses said a group of BCL men put the main gate of the university under lock and key and stopped the shuttle train services by placing logs on the rail tracks, causing sufferings to the students. Also read:Tension mounts as BCL, JCD clash at DU No buses which carry teachers left for the city in the morning amid obstruction by the BCL men and different departments were forced to postpone their exams and classes, said students.