College entrance examination immigrants who graduated from college

To be honest, I have never encountered such a problem, but I don't think his arrest should be the reason why your household registration is locked. You should go to the local police station to coordinate, and the school should also help solve the household registration problem. I brought my hukou book to school when I was in college. If not, I think you can ask the court for help. Now, if some departments and institutions do not take some hard measures, they will delay. Another way is to report this matter to newspapers or some TV programs, so that the problem can be reported easily.