Police have filed a case against 75 BNP leaders and activists, including Metropolitan BNP convener Dr Shahadat Hossain and member secretary Abul Hashem Bakkar, in connection with a clash between police and BNP men in Chattogram on Wednesday. The case was filed at Kotwali police station around 2am on Thursday, said Mohammad Nezam Uddin, Officer-in-Charge of Kotwali Police Station. Read: BNP men clash with police in Ctg, 44 held OC Nezam Uddin said the case was filed on charge of  obstructing police from performing duties, destruction of property and assault on police. Besides, several hundred unnamed people have been made accused in the case. On Wednesday, leaders and activists of BNP clashed with police in front of Press Club at Jamalkhan in Chattogram city as police allegedly obstructed them during their bid to form a human chain.