The owner of Joplin business pleaded guilty to mail fraud conspiracy and money laundering related to the sale of synthetic marijuana.
The Springfield family is facing federal charges for alleging distributing millions worth of illegal synthetic drugs commonly known as K2.
The manager of the Tobacco Shop in Platte City is accused of selling the synthetic drug from the store.
Authorities raided more than a dozen businesses as part of a crackdown.
Karen Dobner lost son to use of synthetic marijuana.