At least 18 people are facing more than 80 charges in an alleged drug-trafficking operation that covered a large swath of southern Ontario.
Durham Region police say they launched an investigation dubbed Project Yuma in May in collaboration with the police force in Kingston, Ont.
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They say they uncovered a ring that allegedly operated between Kingston and the Greater Toronto Area.
The ring allegedly distributed large quantities of powdered fentanyl, cocaine and crystal meth.
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Police say they seized more than eight kilograms of cocaine during the investigation, as well as $750,000 in cash, assorted weapons and several stolen vehicles.
Anyone else with information on the investigation is being asked to come forward.