Chittagong Bureau : Police rounded up three leaders of Jamaat-Shibir from Chandmeah munshi lane area under Bakalia thana on Monday evening. They were rounded up from Mohiuddin Building of the area about 5 pm while they were getting preparations for launching violence in the area. Acting on secret information, police conducted raid in the building, sources said. The detained are Md. Yousuf (55), publicity secretary of Thana Jamaat unit, School Secretary of thana Shibir Unit Hasan Al Rana(25) and publication secretry of ward Jamaat unit Hasnul Manzir(23). Thana police sources said these Jamaat- Shibir activists are shouldering a number of violence case and sent them to court after shown arrest , sources said.