Barrie Police have uncovered some drugs including cocaine and purple heroin.
Members of the Street Drug Unit and the Tactical Support Unit executed search warrants on Thursday.
The first happen at a home on Montserrand Street around 2 PM where a search warrant was executed resulting in 11 people arrested and a quantity of drugs seized.
Later that evening, another search warrant was executed at a Hart Drive home where more drugs and cash were seized, and 4 people were arrested including a youth.
The four were released and will appear in a Barrie court in December.
