Investigations by several agencies led to the arrests of 23 people in northwest Missouri on charges related to drug sales.

Capt. Mike Donaldson of the Buchanan County Drug Strike Force says 18 people were arrested this week on state felony drug warrants. The warrants alleged the suspects sold methamphetamine, marijuana and prescription pills.

Another five people were arrested on federal warrants for methamphetamine distribution.

Donaldson says warrants have been issued for seven more people and he expects more arrests.

Several agencies worked on the investigations over the last 12 to 18 months.