Owners and employees at three Oakland County businesses have been charged after synthetic marijuana was bought at their stores north of Detroit.
The Oakland County sheriff's office on Friday says packets of K2, also known as Spice, were seized at the businesses during a two-week investigation.
A state law banning the sale and use of synthetic drugs went into effect on July 1. The charges involve delivery and/or manufacturing the substances.
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Authorities say K2 was bought at a tobacco shop in Waterford, and two convenience stores in Pontiac.
The U.S. Drug Enforcement Administration on Thursday said it seized more than $36 million in cash and arrested 91 people in a nationwide crackdown against manufacturers, distributors and vendors of synthetic designer drugs.