VAUGHAN, Ont. - Five Ontario residents are facing numerous charges after what police are calling the largest clandestine drug lab, methamphetamine and chemical seizure in Ontario history.

Members of the Asian Organized Crime Task Force -- which includes police forces from across Ontario and Canada -- revealed details today of a lengthy investigation into a crime ring they allege involves large-scale production of methamphetamine.

They announced seven search warrants had been executed in July at residences and businesses across the Greater Toronto Area, along with two in the Campbellford and Warkworth areas of eastern Ontario.

Investigators say three clandestine drug production labs were dismantled in the Toronto area.

Police say 120 kilograms of pure methamphetamine, equivalent to about four million pills, was seized, along with more than 110,000 meth pills, 14 kilograms of meth powder, five vehicles and $81,000 in cash.

The task force includes officers from Toronto police, Ontario Provincial Police, Royal Canadian Mounted Police, York Regional Police, Peel Regional Police and the Canada Border Services Agency.