They were nabbed during raids in Mohakhali DOHS, Baridhara and Adabor areas on Sunday night, RAB-4 Company Commander Md Abu Sayeed Khan said.
He did not disclose their identity, but said the media would be briefed later.
Khan said members of this fraud gang have been duping job-seekers of much money by giving them fake appointment letters after planting fake job advertisement in different newspapers.
He said members of the gang rent offices in different areas of the city for a month or two to take fake interviews of job-seekers, and then changed contact numbers and moved to other areas after collecting the money by conning unsuspecting job-seekers.