Gatineau Police say officers stumbled across a massive grow-op Sunday.
Officers were responding to a call about suspicious behaviour at a residence on Alexander Street when they observed elements consistent with a marijuana grow op.
Police used a search warrant to seize 151 mature marijuana plants and 58 lbs of marijuana with a street value of more than $440,000.
They also seized around $25,000 of material used to produce drugs.
Two men were arrested at the scene and could faces charges of producing drugs and possession for the purpose of trafficking.