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Police say they discovered a $1.2-million grow-op at a house in southwest Calgary Friday. ((CBC))

Calgary police discovered a 1,000-plant marijuana growing operation in the southwest that they say is worth over $1.2 million.

Officers raided the home at Discovery Ridge Hill S.W. on Friday after a one-week investigation.

Officials obtained a warrant to search it after members of the public provided tips to the police.

Investigators also found several samurai swords at the residence. The grow-op has caused so much damage to the house, it will likely have to be condemned, police said.

So far police have not made any arrests and no charges have been laid.

Grow-op raided south of Calgary

More than 1,400 marijuana plants were seized in a drug bust south of Calgary on Thursday.

RCMP officers discovered the sophisticated grow-op when they searched a home near the hamlet of Millarville, about 35 kilometres southwest of the city. The plants would have been worth more than $1.7 million on the street, according to police.

Officers arrested one suspect who had two loaded handguns with him, police said.

Ronald William Weiting, 48, of Calgary faces several drugs and firearms charges.