The Chief and, through him and as directed by him, the Department, has the duty within the limits imposed by the resources of the Department to preserve the public peace and to see that all laws and regulations of this Title and of the criminal laws within the Idaho Code are enforced within the City. Whenever any violation of such laws or regulations shall come to its knowledge or be reported to it, it shall cause the requisite investigation and report to be made; and shall when in the judgment of the Chief it is merited, seek prosecution by the City or County Prosecutor as may be appropriate.