The local liquor control commissioner shall have the following powers, functions and duties with respect to licenses granted under this chapter:

    A.    In addition to and not limited by the specific penalties above set out for violations of specific sections of this chapter, the local liquor control commissioner may suspend for thirty (30) days or revoke any liquor license issued under this chapter for any state law pertaining to the sale of alcoholic liquors by any licensee, his agent, servant or employee.

    B.    The local liquor control commissioner may suspend or revoke any liquor license if the licensee makes any false statement or misrepresentation in the application for a license.

    C.    The local liquor control commissioner may enter or authorize any law enforcing officer to enter at any time upon any premises licensed to determine whether any of the provisions of this chapter or the laws of the state of Illinois pertaining to the sale of alcoholic liquor have been or are being violated at such time to examine the premises of the licensee in connection therewith.

    D.    Complaint by Residents. Any five residents of the city shall have the right to file a complaint with the mayor, stating that any licensee under this chapter has been or is violating the provisions of this chapter, or any amendments hereto, or of any of the statutes of the state of Illinois, enacted with reference to the control of liquor. Such complaint shall be in writing and shall be signed and sworn to by the parties complaining.

    The complaint shall state the particular provision, rule or regulation believed to have been violated and the facts in detail upon which such belief is based. If the mayor is satisfied that the complaint substantially charges a violation, and that from the facts alleged, there is reasonable cause for such belief, it shall set the matter for hearing, and shall serve notice upon the licensee of the time and place of such hearing and of the particular charges in the complaint. (Prior code § 21-2-12)