![Minn. Head Shop Owner Pleads Not Guilty To Charges](http://townsquare.media/site/67/files/2010/12/court-gavel.jpg?w=980&q=75)
Minn. Head Shop Owner Pleads Not Guilty To Charges
The owner of a Duluth head shop and three workers have pleaded not guilty to federal charges of selling synthetic drugs that authorities say were misbranded and marketed as incense, potpourri or bath salts.