Mo. Rev. Stat. § 548.243
In any criminal proceeding wherein a court in this state has issued a warrant for the arrest of a person and that person was arrested in any other state, territory, or possession of the United States and that person waives extradition and consents to return to this state, the sheriff of the county where the warrant was issued may contract with an agent for the return of such person to this state, or the sheriff or his deputy may return such person to this state. All necessary expenses which would be paid by the state if there had been extradition, incurred by the sheriff, his deputy or an authorized agent in returning the person shall be paid to the sheriff by the state regardless of the ultimate disposition of the criminal proceedings. Such costs after such payment shall be taxed against the person and recovered by the entity paying the same, unless the person is acquitted of the criminal offense charged.
§ 548.243, RSMo
Effective 7/1/1994