LaSalle Police have charged an Amherstburg woman.
Police say on Tuesday, officers seized 130 capsules of fentanyl from the 20-year-old woman.
She has been charged with possession of fentanyl for the purpose of trafficking.
She's also facing four counts for breaching conditions.
During the investigation, police also arrested and charged a 24-year-old Windsor man.
Police say the approximate street value of the drug is $9100.