Police on Wednesday recovered the knife used in the murder of Bulbul Ahmed, a student of Shahjalal University of Science and Technology (SUST) and his mobile phone set at Tilagaon near the university campus in Sylhet. The knife and the mobile phone set were recovered from the house of Kamrul Hossain, 30, a mason of the area who was detained in connection with the murder. Kamrul also confessed to his involvement in the murder, Azbahar Ali Sheikh, deputy commissioner of Sylhet Metropolitan Police. Based on his information, police recovered the knife and the mobile phone after conducting drive at Kamrul’s house around 11am, he added. So far, five people have been detained, said Azbahar. “Investigation is still going on. After  investigation, those who are involved will be shown arrested in this case. So, the total number of arrests cannot be said now.” Read:Three held over SUST student Bulbul's murder

BNP on Thursday alleged that the university and college campuses in the country have become ‘danger zones’ for general students due to ‘unruly’ activities by Chhatra League and Jubo League members.