Ky. Rev. Stat. § 92.340
If, in any city of the home rule class, any city tax revenue is expended for a purpose other than that for which the tax was levied or the license fee imposed, each officer, agent or employee who, by a refusal to act, could have prevented the expenditure, and the members of the city legislative body who voted for the expenditure, shall be jointly and severally liable to the city for the amount so expended. The amount may be recovered of them in an action upon their bonds, or personally. The city attorney shall prosecute to recovery all such actions. If he fails to do so for six (6) months after the money has been expended, any taxpayer may prosecute such action for the use and benefit of the city. A recovery under this subsection shall not bar a criminal prosecution. Any indebtedness contracted by a city of the home rule class in violation of this subsection or of KRS 92.330 or 91A.030(13) shall be void, the contract shall not be enforceable by the person with whom made, the city shall never assume the same, and money paid under any such contract may be recovered back by the city.
KRS 92.340