The Burundian National Police (Police Nationale du Burundi, PNB) is composed of four main units: the Judicial Police, Internal Security Police, Border Police, and Penitentiary Police. Only judicial police officers (officiers de la police judiciaire, OPJs) are authorized to arrest suspects, except in cases in which suspects are caught in the act of committing a crime. In such cases, any citizen can make an arrest but must be immediately transfer the suspect to police custody.