It was the largest illegal marijuana grow operation ever shut down by Niagara Regional Police.
Police have been investigating the grow-op at Third Street Louth and Main Street in St. Catharines since May.
Police searched the place on Tuesday and have arrested 11 people.
They face a list of drug related charges.
More than 17,000 plants were seized by police.
The value is about $34-million.
Lighthouse Festival Preparing for 2027
Opening line up for live theatre in Port Dover and Port Colborne
Province Invests More in Niagara Health
Over $20-million to be spent on reducing wait times for many procedures, at Niagara Health and Hotel Dieu
Flooding Relief on List for AMO
Mayor Mat Siscoe and officials will ask for more help at Association of Municipalities of Ontario conference, but also housing and addictions
Over $40,000 Raised for Day of Giving
Turkstra and Credit Union big contributors, but also individuals raised over $14,000 to help people who have nothing after floods
Police Concerned After Man Released
London police say Connor Bennett is now in Thorold
Body Found During Home Demolition
Police believe Brenda LeBlanc was murdered
2 Men Wanted After Lincoln Break In
Police say this happened on Cherrywood Drive
Boy Severely Hurt in Lundy's Collision
Hamilton police helped the NRP arrest a driver for impaired driving