Rapid Action Battalion (RAB) arrested four cadres of Jama'atul Mujahideen Bangladesh (JMB) on November 20 in a hideout in Ukilpara area of Sirajganj District in Rajshahi Division, reports The Daily Star. The arrestees are Shamim Hossain alias Kiron (19), Naimul Islam (25), Atiar Rahman alias Kolom Soinik (19) and Aminul Islam alias Shanto (20). RAB recovered found two firearms, gunpowder, bomb-making materials and extremism-provoking books there.