Police have conducted at least a dozen raids in the Montreal area this morning to dismantle a drug importation and distribution network.

The raids are part of a joint police operation, with other search warrants being executed in Montreal North, Longueuil, the lower Laurentians and near the U.S. border.

Officers searched through at least two units of a building on the corner of Denonville and Beaulieu Streets in Ville-Émard.

Sgt. Laurent Gingras with the Montreal police say at least 20 arrests have already been made and more are likely to come.

He says they seized marijuana, cocaine, and other drugs, as well as weapons. 

About a hundred officers from various police departments are involved in the operation.

Police say they can not give more details because the operation in ongoing. Police are expected to give an update on the operation later today.