Mo. Rev. Stat. § 84.810

The board may assist in the maintenance of such police relief association, by causing to be paid into the treasury thereof, all unclaimed money that may come into the hands of the police, the proceeds of sale of unclaimed property remaining in the hands of the police at the end of each fiscal year; provided, that the treasurer or other officers of such relief association, into whose hands such money may be placed, shall be required to give a good and sufficient bond to the city for securing the same.