Thirteen people were arrested in connection with an attack on white-cloth RAB members in Mirsarai upazila of the district on Thursday.
Commander of RAB-7 Lieutenant Colonel MA Yusuf said 13 people involved in the attack on RAB members were arrested from different areas of Chattogram and Feni districts.
Rapid Action Battalion (RAB) also filed three cases with Zorarganj Police Station in this connection.