Members of RAB-5, Mollapara camp arrested Ismael Hossain, a member of outlawed Ansar-Al Islam from Raghurampur village under Puthia upazila on Thursday night.
Arrested Ismael Hossain (24) is the son of Golam Mostafa of Palashpur village under Matiranga police station of Khagrachhari district.
RAB also recovers seven extremist books and one leaflet from the possession of Ismael. A case has been filed with Putina police station in this connection.