Unless the power and responsibility is expressly conferred by a provision of this code or by statute on another officer, body or agency, the general Police Department or police authorities of the municipal corporation have the duty to enforce the provisions of this code and all powers necessary to investigate instances or complaints of violations, determine probable liability for violations based on the investigation and the preponderance of the evidence available, issue and serve citations and summonses or other notices and take such other actions as may be necessary as provided or permitted under this code or other laws to ensure that any violating acts or conditions are prevented or alleviated, violators punished and the like. In cases where responsibility for enforcement is conferred on some other officer, body or agency, the officer, body or agency shall for that purpose have the same enforcement powers as the general police authorities of the municipal corporation described above, but may also call upon the general police authorities to assist in any way necessary to carry out the enforcement responsibilities.
(`86 Code, § 1-4-5)