Mo. Rev. Stat. § 105.240
Current with changes from the 2023 Legislative Session
Every officer may break open doors and enclosures to execute a warrant or other process for the arrest of any person, or to levy an execution, or execute an order for the delivery of personal property, if, upon public demand and an announcement of his official character, they be not opened.
§ 105.240, RSMo
RSMo 1939 § 12824