195.280
NARCOTIC NEWS
Drug Law in Missouri 195.280
Arrest without warrant, when
Any peace officer of the state of Missouri, or of any political subdivision thereof,
may, within the boundaries of the political entity from which he derives his
authority, arrest without a warrant any person he sees violating or whom he has
probable cause to believe has violated any provision of this chapter.

(L. 1971 H.B. 69)
Google