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Police: record the statements of witnesses; record the evidence; take photographs of burnt homes; arrest the Fiesta fans; get the assaulted women medically examined.
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Public Prosecutor: examine the witnesses; cross examine the witnesses in court; argue the case for the victims.
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Defense Lawyer: examine the witnesses; meet the accused persons; cross examine the witness in court.
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Judge: hear the witness; write the judgment; decide for how many years the accused will be put in jail; pass the judgment: conduct a fair trial.
The police are the very first part of the criminal justice system which comes in contact with the location of crime or accident and collects evidence. Then comes the role of Public Prosecutors and Defense lawyers. In the end the Judge decides the case and passes the judgment. There are a number of other things that happen after a crime takes place, which are mentioned above.