Assam has become a hotbed of "jihadi activities" with five modules having links with Bangladesh-based terror outfit Ansarul Islam found in five months, Chief Minister Himanta Biswa Sarma said today. "Six Bangladeshi nationals belonging to Ansarul Islam had entered Assam to indoctrinate youths, and one of them was arrested when the first module was found at Barpeta in March this year," Mr Sarma said at a press conference.