Usually it's the network police who catch it. He said that a case had been filed. Will he be arrested?

Of course, the network police will know the truth of the matter through the information of some departments and extremely networks. If this person really files a case, the network police need to contact the department in charge of this person to see if this person has escaped. If this person has a file, it will be released after approval by the management department. It goes without saying that this person has an unsolved case, and of course he should be brought to justice.