Missouri Revised Statutes Title XXXVIII. Crimes and Punishment; Peace Officers and Public Defenders § 565.227. Stalking, second degree, penalty

1. A person commits the offense of stalking in the second degree if he or she purposely, through his or her course of conduct, disturbs, or follows with the intent to disturb another person.

2. This section shall not apply to activities of federal, state, county, or municipal law enforcement officers conducting investigations of any violation of federal, state, county, or municipal law.

3. Any law enforcement officer may arrest, without a warrant, any person he or she has probable cause to believe has violated the provisions of this section.

4. The offense of stalking in the second degree is a class A misdemeanor, unless the defendant has previously been found guilty of a violation of this section or section 565.225, or of any offense committed in another jurisdiction which, if committed in this state, would be chargeable or indictable as a violation of any offense listed in this section or section 565.225, or unless the victim is intentionally targeted as a law enforcement officer, as defined in section 556.061, or the victim is targeted because he or she is a relative within the second degree of consanguinity or affinity to a law enforcement officer, in which case stalking in the second degree is a class E felony.