When applied for new passports for my wife and daughter, I had to give bribe money from passport office ansar to DB officers for police verifications. Why I gave them money- because they have threatened that they won't process or submit report and reject if I don't. One DB officer even called me multiple times because at first I didn't give him money, then he came back to DB and called me 3/4 times in next day to bKash him.