The St. Clair County Drug Task Force conducted a narcotics investigation involving the sales of heroin in the Port Huron area. Last week on Thursday, at approximately 8 p.m., members of the Drug Task Force served a search warrant at a residence in the 500 block of Union St. in the city of Port Huron. Officers round heroin, methamphetamine drug paraphernalia and US currency. Arrested were a 38 year old man from Detroit, and a 42 year old male along with a 26 year old female, both of Port Huron. All three were lodged in the St. Clair County Intervention and Detention Center on a number of charges.