They found $22,000 worth of fentanyl, $7,000 worth of cocaine and $670 cash.
The NRP searched a home and a car in St. Catharines on Tuesday, in the Niagara Street and Church Street area.
Officers were responding to a report of two men with guns, but they did not find any firearms on scene.
Three people have been arrested and charged; a 30-year-old St. Catharines woman, a 23-year-old Hamilton man and a 17-year-old boy from Hamilton.
Province Investing Against Invasive Species
The $2-million will help the Niagara region
Niagara Driver Charged with Drug Impairment
OPP say this happened on Highway 17, when a car was seen weaving all over the road
Welland Man Arrested for Child Porn
Police say they noticed child sexual abuse material shared on a social media page early this month
28 More Doctors Hired in Niagara
The region and Niagara Health coordinating new partnership to find even more doctors
Killed Police Officers Honoured by NRP
Police Chief praised Niagara members for standing at attention in 'pounding rain'
Niagara Wineries Shuttle Service Possible
The CUTRIC hopes the province supports helping people move among wineries
Canal Days Vendors Warned of Scams
The City of Port Colborne says criminals are sending fraud emails for payment
Niagara Falls Exploring Hub to Help Homeless
Former CAO Ken Todd has been meeting with community groups