Fake Case

Sir my neighbour has filed a fake case against me and my family. They cut one fingure of their father and filed the case.Police enquiry and report of board of doctors suggest that the injury is self caused.Police filed the cancelling .The cancelling process is going .they filed case in court to entent it furthure.Now my neighbours are trying to go abroad because they knew that after cancellation we will file a case against them for filing fake cases. Suggest me that how we can stop them from going abroad because they are criminals