The chief of police of a city of the first class shall have the immediate superintendence of the police. He or she and the police officers shall have the power and the duty to arrest all offenders against the laws of the state or of the city, by day or by night, in the same manner as a county sheriff and to keep such offenders in the city prison or other place to prevent their escape until a trial or examination may be had before the proper officer. The chief of police and police officers shall have the same power as the county sheriff in relation to all criminal matters arising out of a violation of a city ordinance and all process issued by the county court in connection with a violation of a city ordinance.
Neb. Rev. Stat. §§ 16-323