The hoaxer was Bangladeshi with an MBA from India
The previously unknown organisation that claimed responsibility for the Dhaka attacks was probably so because it existed only in the imagination of one man. He has duly been arrested. Given the rank amateurish manner in which he claimed responsibility it is unlikely that he could be behind the attacks which were conducted in an extremely professional manner.
Wamy feels that Bangladeshi version of political correctness is responsible for the hoaxer receiving less media attention than he should.