A Jamaat leader has been arrested at Atla village of Sadar upazila in the district on Wednesday.
Acting on a tip-off, police arrested Abdul Awal, 55, son of Golam Mawla, a Rokon of the district Jamaat-e-Islami, said Officer-in-Charge (OC) Kamal Pasha of Brahmanbaria Sadar police station.
Awal is accused in several cases, including attacks on police and setting fire to the rail station, the police official said.