Rapid Action Battalion (Rab) was raiding different areas of Sylhet city till 1:30am for Sylhet divisional head of the banned Jamaatul Mujahideen Bangladesh (JMB). After a tip off, six teams of Rab-9 have cordoned off Tero Ratan and Block F of Shahjalal on the outskirts of the city late last night. The elite crime busters were hunting for Salahuddin alias Salehin, chief of Sylhet division JMB, and Saidur Rahman, former ameer of Habiganj district Jamaat and also a JMB activist, said Rab sources. The raids were undertaken on the basis of information provided by detained JMB chief Abdur Rahman, who was arrested Thursday at a East Shaplabagh house in the district. Salahuddin is in charge of the banned outfit's operations in Sylhet and Mymensingh region while Saidur Rahman is the one whose chequebook was found at the Shaplabagh house.