Adam Tamizi Haque, chairman of Haque Group, was taken to the DB office on Saturday evening.
He was taken to the DB office at Minto Road in Dhaka for questioning, said an official of DB's Gulshan division.
Another DB source said that DB Chief Harun-Or-Rashid will brief the media about it.
Read: Tamizi Haque's arrest aborted by RAB in the face of suicide threats
Earlier on November 16, Rapid Action Battalion (RAB) members raided the house of Adam Tamizi Haque in Gulshan area of the capital.
Tamizi Haque, however, threatened to commit suicide if he is arrested, according to security officials who took part in the raid.