Under the Ethiopian Criminal Justice System, delivery of criminal justice is a process. It starts from setting justice on motion. Some person or government official may give information about the commission or omission of a crime. The person need not necessarily be the victim of a crime. He or she may be any concerned person or whistle blower. After the police get such information, the police start criminal investigation. In principle and from the point of view of human rights, no one should be arrested before the necessary investigation is done and the appropriate evidence is collected. The arrest if necessary should follow the investigation. Thus, investigation should, in principle, precede arrest. However there may be some cases that the suspect is under custody until the completion of the investigation. Article 59(1) of the criminal procedure code rules “The court before which the arrested person is brought (article 29) shall decide whether such person shall be kept in custody