Mo. Rev. Stat. § 547.330: Affirmation of conviction or dismissal of appeal, execution of sentence, arrest of convict, when.

In all cases where the conviction of a defendant is affirmed on appeal or the appeal is dismissed or withdrawn and the defendant is to be imprisoned in any jail or by the department of corrections, the court affirming or dismissing the appeal or in which the appeal is withdrawn shall direct the sentence pronounced to be executed, and for this purpose the court shall order the marshal of the court to arrest the convict, and deliver him to the proper official. In its discretion the court may order the marshal to arrest the convict prior to the date the opinion of the court affirming the judgment in the cause is made public.