Rapid Action Battalion (RAB) detained three new JMB activists of Sarwar-Tamim group from Fatulla area in the district last night.They were identified as Waliullah,26, Al Amin 29 and Kamrul 27.RAB men also seized foreign fire arms, gun powder and Jihadi books from their possession at Baktaboli Ferry Ghat under Fatulla police station.CEO of RAB-11 Lieutenant colonel Kamrul Hasan said, acting on a tip-off they went to Baktaboli Ferry Ghat, the eastern side of the river Dhaleswri, where the three JMB activists crossing the river by a trawler at 11 pm on Friday night.Searching them the RAB personnel recovered one foreign revolver, one pistol, gun powder and Jihadi books from their possession, reports BSS.They were taken to RAB-11 office at Adamji Nagar for interrogation.