MO Rev Stat § 217.722 (2021)
2021 Missouri Revised Statutes|Title XIII - Correctional and Penal Institutions|Chapter 217 - Department of Corrections|Section 217.722 - Probation officers, power to arrest, when — preliminary hearing allowed, when — notice to sentencing court.

Effective - 28 Aug 2018, 2 histories   217.722. Probation officers, power to arrest, when — preliminary hearing allowed, when — notice to sentencing court. — 1. If any probation officer has probable cause to believe that the person on probation has violated a condition of probation, the probation officer may issue a warrant for the arrest of the person on probation. The officer may effect the arrest or may deputize any other officer with the power of arrest to do so by giving the officer a copy of the warrant which will outline the circumstances of the alleged violation and contain the statement that the person on probation has, in the judgment of the probation officer, violated the conditions of probation. The warrant delivered with the offender by the arresting officer to the official in charge of any jail or other detention facility shall be sufficient authority for detaining the person on probation pending a preliminary hearing on the alleged violation. Other provisions of law relating to release on bail of persons charged with criminal offenses shall be applicable to persons detained on alleged probation violations.  2. Any person on probation arrested under the authority granted in subsection 1 of this section shall have the right to a preliminary hearing on the violation charged as long as the person on probation remains in custody or unless the offender waives such hearing. The person on probation shall be notified immediately in writing of the alleged probation violation. If arrested in the jurisdiction of the sentencing court, and the court which placed the person on probation is immediately available, the preliminary hearing shall be heard by the sentencing court. Otherwise, the person on probation shall be taken before a judge or associate circuit judge in the county of the alleged violation or arrest having original jurisdiction to try criminal offenses or before an impartial member of the staff of the division of probation and parole, and the preliminary hearing shall be held as soon as possible after the arrest. Such preliminary hearings shall be conducted as provided by rule of court or by rules of the parole board. If it appears that there is probable cause to believe that the person on probation has violated a condition of probation, or if the person on probation waives the preliminary hearing, the judge or associate circuit judge, or member of the staff of the division of probation and parole shall order the person on probation held for further proceedings in the sentencing court. If probable cause is not found, the court shall not be barred from holding a hearing on the question of the alleged violation of a condition of probation nor from ordering the person on probation to be present at such a hearing.  3. Upon such arrest and detention, the probation officer shall immediately notify the sentencing court and shall submit to the court a written report showing in what manner the person on probation has violated the conditions of probation. Thereupon, or upon arrest by warrant, the court shall cause the person on probation to be brought before it without unnecessary delay for a hearing on the violation charged. Revocation hearings shall be conducted as provided by rule of court. ­­-------- (L. 1989 H.B. 408 § 6, A.L. 1990 H.B. 974, A.L. 1995 H.B. 424, A.L. 2018 H.B. 1355)