Another case has been filed in connection with the violence in the district town over the death of a madrasah student in a triangular clash on January 12.
Police informed that Mufti Maulana Samsul Haq, a teacher of Jamia Islamia Yunusia Madrasah filed the case against 500 unidentified people with Sadar Model Police Station on Friday night.
A total of 12 cases have now been filed over the violence.
Earlier, on January 12, madrasah students lit up tyres and spread them out on the streets to block several places in the town and furiously demonstrated, protesting the death of Masudur Rahman, a student of Jamia Islamia Yunusia Madrasah, who was injured in a clash the day before.
They also vandalised 12 establishments, set fire to two others and blocked the rail tracks during their daylong violent demonstrations.
At least 20 people were injured in a triangular clash among the madrasah students, local traders and activists of Bangladesh Chhatra League over a trifling matter at Zilla Parishad Market in TT Road area on January 11.