Senior Judicial Magistrate Hasibul Haque sent them to Sirajganj District Jail on Sunday, Shahjadpur OC Rezaul Haque confirmed it to the Dhaka Tribune.
Four other detainees are Md Alamgir Hossain, Nazmul Khan, Arshad Bhuiyan and Jahir Sheikh. They were picked up from different areas of Shahjadpur during separate police raids Friday.
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Earlier, Shimul’s wife Nurun Nahar filed a case against 18 individuals, including Shahjadpur Municipality Mayor Halimul Haque Miru, his two brothers Pintu and Mintu, and three unidentified suspects.
Local Awami League leader Bijoy Mahmud filed another case against 25 people including Miru and his two brothers over the clash that ensued between two groups of the local Awami League on Thursday. A bullet fired by the mayor from his shotgun hit Shimul's head. He died on Friday afternoon.
Miru, who fired four-five bullets after his house was attacked, is on the run. Police have arrested his two brothers and also seized the mayor's arms.