Police have arrested 20 people after a yearlong investigation into the alleged trafficking of cocaine, marijuana and methamphetamine in Gatineau, Que., and Ottawa.

Gatineau police said Project Dérapage dismantled a “major drug trafficking network” in the region with raids beginning at 2 a.m. ET Thursday.

Quebec provincial police, Ottawa police and MRC des Collines-de-l’Outaouais also participated in 16 raids, including 12 in Gatineau and four in Ottawa.

Police said the alleged network was linked to “outlaw motorcycle gangs.” The suspects are expected to appear at the Ottawa and Gatineau courthouses on charges of drug trafficking, drug possession for the purpose of trafficking and possession of firearms.

Police continue to investigate and they said more arrests could be made and more charges could be laid.

Anyone with information on this investigation is asked to call Gatineau police at 819-243-4636.