Detectives arrested 11 fake members of Detective Branch from different places of the city on Tuesday.
A gang of miscreants was committing robbery at different places of the city identifying themselves as DB men, detectives carried out the drives in the city, said additional deputy commissioner of DB of Chittagong Metropolitan Police Mohammad Kamruzzaman.
During the drive the DB men recovered police handcuff, toy pistols and mobile phone set from the arrestees, reports UNB.
On December 28, a gang of fake DB men picked up college student Imtiaz Ahmed and snatched away his mobile phone set and cash.
Imtiaz, later, filed a case in connection with the incident.