The Jahangirnagar University authorities Tuesday morning expelled three of its students for life for their alleged involvement in the killing of Zubair Ahmed, a fourth-year student of the university. Zubair, 24, a student of the university's English department, was critically stabbed on Sunday and succumbed to his injuries at a city hospital the following day. The victim belonged to Shafin-Sammo faction of the university unit Bangladesh Chhatra League, a student wing of ruling Awami League. The Vice-Chancellor of the university Prof Shariff Enamul Kabir took the action against the trio according to the disciplinary code of the university. The expelled students are -- Khandaker Ashikul Islam and Khan Mohammad Rais, both fourth-year students of Zoology department, and Rashedul Islam, fourth-year student of Philosophy department. The trio belong to the Shamim-Sharif faction of the BCL university unit. Of the three, Ashikul was arrested. Meanwhile, several hundred students of the university under the banner of Sadharon Chhatra-Chhatri Parishad and a section of teachers under the banner of Bishwabiddaloy Shikkhak Somaj staged demonstrations on the university campus for over two hours since 10:00am Tuesday demanding exemplary punishment of the killers. As part of the demonstration, they also formed separate human chains in front of the university Shaheed Minar. The demonstrators also demanded resignation of Arzu Miah, the proctor of the university, and Azimuddin, the security officer of the university. Meanwhile, nearly two hundred students, belonging to the Shamim-Sharif group, also brought out a procession on the campus around 10:30am demanding punishment of the killers. General students and a section of teachers alleged that the BCL procession was an attempt to divert attention from their demand of punishing Zubair's killers. In another development, the vice-chancellor of the university held a press briefing at his office around 12:30pm in the awake of the death and its consequence. During the briefing he condemn the killing and said if the involvement of any other students was found, action would be taken against him. Replying to a query, he denied the allegation that Zubair was a victim of BCL infighting. When The Daily Star contacted Badrul Alam, officer-in-charge of Ashulia Police Station, he said detained JU student Ashikul during the primary investigation divulged that some seven to eight others were also involved with the killing of Zubair. Zubair, 24, a student of the university's English department, was critically stabbed on Sunday and succumbed to his injuries at a city hospital the following day. The victim belonged to Shafin-Sammo faction of the university unit Bangladesh Chhatra League, a student wing of ruling Awami League. The Vice-Chancellor of the university Prof Shariff Enamul Kabir took the action against the trio according to the disciplinary code of the university. The expelled students are -- Khandaker Ashikul Islam and Khan Mohammad Rais, both fourth-year students of Zoology department, and Rashedul Islam, fourth-year student of Philosophy department. The trio belong to the Shamim-Sharif faction of the BCL university unit. Of the three, Ashikul was arrested. Meanwhile, several hundred students of the university under the banner of Sadharon Chhatra-Chhatri Parishad and a section of teachers under the banner of Bishwabiddaloy Shikkhak Somaj staged demonstrations on the university campus for over two hours since 10:00am Tuesday demanding exemplary punishment of the killers. As part of the demonstration, they also formed separate human chains in front of the university Shaheed Minar. The demonstrators also demanded resignation of Arzu Miah, the proctor of the university, and Azimuddin, the security officer of the university. Meanwhile, nearly two hundred students, belonging to the Shamim-Sharif group, also brought out a procession on the campus around 10:30am demanding punishment of the killers. General students and a section of teachers alleged that the BCL procession was an attempt to divert attention from their demand of punishing Zubair's killers. In another development, the vice-chancellor of the university held a press briefing at his office around 12:30pm in the awake of the death and its consequence. During the briefing he condemn the killing and said if the involvement of any other students was found, action would be taken against him. Replying to a query, he denied the allegation that Zubair was a victim of BCL infighting. When The Daily Star contacted Badrul Alam, officer-in-charge of Ashulia Police Station, he said detained JU student Ashikul during the primary investigation divulged that some seven to eight others were also involved with the killing of Zubair.