A video of the lynching went viral on social media
He was nabbed in Sreemangal while trying to flee to India on Thursday night, said Mizanur Rahman, assistant director of RAB Headquarters.
Mizan reportedly went underground after the government launched its anti-graft drive. RAB conducted a raid on his residence in Mohammadpur's Aurangzeb Road on Oct 8 but he was not there at the time.