Police have confiscated more than 400 cannabis plants with an estimated street value of £500,000, in Rochdale.
The operation, carried out by a local neighborhood team, involved warrants at two houses on Dunster Avenue.
According to Greater Manchester Police, the cannabis farm spanned “all floors” and occupied “various rooms of the properties.”
Two men, aged 31 and 36, were apprehended on charges of cannabis production, with abstracting electricity.
During the raid, personnel from Electricity North West were also present to secure the electrical supply.
Insp Meena Yasin said: “These warrants have resulted in a significant amount of cannabis being seized and we remain dedicated to removing drugs from the streets.
“This is not a victimless crime – there is a web of organised criminality behind these recent seizures.
“Without input from our communities, we wouldn’t be able to execute such warrants. I would encourage anyone with any concerns or information about the trade of drugs in your area to come forward and speak with police directly or contact Crimestoppers anonymously.
“Information from the public plays an incredibly important role in these warrants time and time again – please let us know if you have any concerns about drug activity in your local area.”