Every police officer shall report to his superior officer all persons known to be gamblers, receivers of stolen property, thieves, burglars or disorderly persons, and also all unlawful or disorderly houses or places in the city coming to his knowledge, as well as all violators of the laws of the state or ordinances of the city reported to him, or of which he may be cognizant, and when it shall come to the knowledge of any member of the police force that any ordinance has been violated, such member shall forthwith cause a complaint to be made before a court of record and the proper witnesses to be subpoenaed and evidence to be produced for the successful prosecution of the defendant. It shall be the duty of the chief of police and the police officers to serve promptly all warrants or other processes issued in any case pending under any law or ordinance of the city before any proper court thereof. (1925 Code § 30-15; amd. 1981 Code)