The board of supervisors of any county in this state and mayor and board of aldermen, or board of aldermen and councilmen, as the case may be, of any municipality in this state are hereby authorized and empowered to appropriate, from time to time, sums of money, not exceeding one-third (1/3) of the fines which have been collected by them respectively, from the unlawful sale or possession of intoxicating liquors and/or narcotics and/or other illegal drugs, for the purpose of defraying expenses incurred by law enforcement agencies in the procuring of evidence of violations of statutes or ordinances, as the case may be, against the unlawful sale or keeping of intoxicating liquors and/or narcotics and/or other illegal drugs. For the purpose of this section, the word "expenses" shall include, but not be limited to, expenditures related to surveillance, the purchase of investigative equipment, the purchase of samples to be used as evidence, the purchase of information, and the defraying of living expenses of persons specially employed in investigations.