Pension funds; designation; tax levies, when; investment of funds

(a) The amount of money derived from taxes levied and all money received from assessments, dues and donations for the benefit of such funds shall constitute pension trust funds to be known and designated, respectively, as the policemen's pension fund and the firemen's pension fund. Such pension funds shall be devoted exclusively to and for the purposes enumerated in this section. All moneys derived from the taxes levied and money received from other sources as enumerated in this section shall be paid into the policemen's pension fund or the firemen's pension fund, as the case may be, until the amount in such pension fund equals the total of the actuarially-determined liabilities which are attributable to all members in active service and to all persons who are receiving, or who are entitled to receive in the future, pensions and other benefits from such fund. Further tax levies shall be made only for the purpose of maintaining each pension fund at such level. (b) All moneys accumulated under the provisions of this act shall be deposited by the treasurer in the same manner as other city funds, except that the board of trustees, at their option, may invest any of such reserve funds in: (1) Investments authorized by K.S.A. 12-1675, and amendments thereto, in the manner prescribed therein; (2) direct obligation bonds of the United States of America maturing, or redeemable, at par and accrued interest, within three years from date of purchase; or (3) bonds of any municipality in the state of Kansas, the total bonded indebtedness of which is less than 15% of the total assessed tangible valuation of such municipality. Such bonds shall mature within five years from the date of purchase.