OAKVILLE, Ont. -- Fifteen people face a long list of charges after an eight-month police investigation into alleged drug trafficking in Toronto, Hamilton and Halton region.

Police say the group ran a sophisticated operation using "modern-day technology and counter-detection techniques" but that the probe identified suspects and their alleged roles, drug stash locations and concealment methods.

They say the drug ring was "well entrenched" in the three municipal areas.

Officers from six police forces executed 15 search warrants across southern Ontario on Tuesday that allegedly turned up 47 kilograms of marijuana, 2.5 kilograms of cocaine and two handguns, among other items.

The 15 accused are between the ages of 24 and 33 and from Hamilton, Milton, Burlington, Toronto, and Oakville.

The charges include possession for the purpose of trafficking, conspiracy to traffic a controlled substance, possession of a prohibited weapon and possession of property obtained by crime.