Any regulation of any municipality pertaining to any area outside of its corporate limits shall be subject to any lawful and existing regulation of another municipality pertaining to that same area except as otherwise provided by an agreement entered into pursuant to the Interlocal Cooperation Act or Joint Public Agency Act. However, any area annexed by any municipality shall only be subject to the ordinances of such annexing municipality after such annexation.
Neb. Rev. Stat. §§ 18-1716