Police rounded up five activists of Islami Chhatra Shibir for possession of a huge quantity of bomb-making materials and provocative leaflets in the city's Muradpur on Wednesday.
Acting on information, cops raided a three-storey building at Muradpur intersection around 10:00pm and arrested the five, said Panchlaish police.
The arrestees, all students, are Abu Bakkar, 27, Shamim, 27, Mohammad Apel, 25, Mohammad Rubel, 25, and Liton, 29.
Law enforcers also seized 10,000 copies of leaflets and as many posters with provocative contents, 10 litres of petrol, five machetes and four cartons of bomb-making materials.
Yesterday, two cases were lodged with Panchlaish Police Station in this connection.
In the afternoon, police sent the five to jail through a local court.
Mohammad Shahidullah, additional deputy commissioner of Chittagong Metropolitan Police (North), said they have information that thousands of activists of Jamaat-e-Islami and its student wing Shibir are making preparation to carry out destructive activities across the port city demanding release of several top Jamaat leaders who are facing trial for committing crimes against humanity during the 1971 Liberation War.
Police have been conducting drives in the city to avert any untoward occurrence, he added.