(a) A person convicted of a crime in this city shall receive as credit toward service of a sentence of imprisonment all time spent by him in jail because of awaiting trial for such crime. Time required by law to be credited upon some other sentence shall be applied to that sentence alone, except that:

    (1)    Time spent in jail awaiting trial for an offense because of a detainer for such offense shall be credited toward service of a sentence of imprisonment for that offense even though the person was confined awaiting trial for some unrelated bailable offense; and

    (2)    Credit for jail time shall be applied to each sentence if they are concurrent.

    (b) The officer required by law to deliver a convicted person to jail shall endorse upon the commitment papers the period of time to be credited as provided in paragraph (a) of this section.

    (c) If a sentence of imprisonment is vacated and a new sentence is imposed on the defendant for the same offense, the new sentence is calculated as if it had commenced at the time the vacated sentence was imposed, and all time served under the vacated sentence shall be credited against the new sentence.

    (d) If a person serving a sentence of imprisonment escapes from custody, the escape interrupts the sentence. The interruption continues until the person is returned to the institution in which the sentence was being served.

(Code 1964, § 7.485)

     State law reference(s)--Similar provisions, RSMo. § 558.031.