The Rapid Action Battalion (Rab) arrested four Jama'atul Mujahideen Bangladesh (JMB) cadres and recovered 5kg power gel and 15 shells of high power hand grenade Tuesday night from Bajitpur of the district.The arrestees are Deen Islam, 50, an Imam of Satura Jam-e-Masjid, Harun, 21, Abdul Hannan, 22, and Mohammod Hossain, 25. All are residents of Satura village of Bajitpur upazila. On information given by JMB cadre Rakib, arrested on Thursday night from Mymensingh, a Rab-9 team led by Lieutenant Commander Majharul Huq arrested the JMB cadres and recovered the power gel and shells of the hand grenade from Hilochia Shakua village under Bajitpur upazila, Rab ASP Ashraf said. RAB sources said they would hand over the JMB cadres to police.