Police arrested a local leader of Bangladesh Chhatra League (BCL) in a case over assaulting a police member in Puthia upazia of Rajshahi on Monday.
The arrestee was Naeem Hasan, general secretary of ward -2 Baneshwar union BCL and ex-vice president of Baneshwar Government College's BCL unit.
The injured policeman, Atiqur Rahman, works in Rajshahi district police.
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Suhrawardy Hossain, officer-in-charge (OC) of Puthia police station, said an easy-bike hit a human hauler carrying Naeem's father Monday afternoon while he was taking mangoes to Baneshwar College ground, leaving him injured.
Naeem came to the spot and saw a team of district police patrolling there. Suddenly, Naeem got furious and started beating policeman Atiqur mercilessly.
He was later rescued and admitted to Rajshahi District Police Lines Hospital.
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Later, a sub-inspector (SI) filed a case against Naeem and his father over the attack on an on-duty police officer.
Legal action will be taken against him, said the OC.