A summons may be served by:
If the defendant fails to appear in response to the summons and upon finding of probable cause that the defendant has committed a felony, the court may issue an arrest warrant.
A warrant may be executed anywhere in the state by any peace officer. The peace officer need not possess the warrant at the time of the arrest, but upon request the officer shall show the warrant to the defendant as soon as possible.
If the peace officer does not possess the warrant at the time of the arrest, the officer shall inform the defendant of the felony charged and the fact that a warrant has been issued.
Mo. R. Crim. P. 22.06