Ontario Provincial Police raided a large commercial building in the 900 block of Mackay Street in Pembroke on 3 March 2021.[1][2] The raid brought together the provincial cannabis enforcement team with organised-crime, street-crime, asset-forfeiture, emergency-response and Upper Ottawa Valley officers.[1][2] Officers seized more than 5,000 cannabis plants and a large quantity of growing and processing equipment.[1][2]

Four people were charged with cultivating cannabis at a place that is not a dwelling house.[1][2] Police released them to appear at the Ontario Court of Justice in Pembroke on 6 April 2021.[1][2]