Police are hunting a gang of organised drug peddlers after £500,000 of cannabis was seized in Angus.
The massive cultivation was discovered when officers from Tayside Police raided an industrial unit in Forfar.
A forensic sweep of the premises is now under way and a specialist unit has been called in to examine the building for evidence.
A police presence will remain in the area while investigations are ongoing and an appeal for information has been launched online and in the local area.
Detective Superintendent Willie Semple confirmed that the class-B plants, which have an estimated street value of £500,000, were discovered during a search on Saturday afternoon.
He said the bust was indicative of an organised crime group and called for any witnesses who could assist the police investigation to come forward.
“This was a very sophisticated set-up and a highly organised production site,” he said. “The seizure will have a direct impact on the supply of cannabis not just in Tayside but further afield.”
Mr Semple said the entire crop of plants found at the unit would now be disposed of.
He added: “All of these plants will now be destroyed and will not reach some of the most vulnerable members of our society.
“Increasing numbers of organised crime groups are diverting into this area of criminality, but we are determined to continue to disrupt such networks and reduce the harm caused by drugs.”
The major find comes as Tayside Police prepares to launch a Ditch the Dealer campaign in Perthshire.
Officers from the community impact team will be in Blairgowrie on Friday to distribute leaflets aimed at raising public awareness and urging members of the public to shop drug dealers.
The printouts contain a form that can be completed anonymously and posted back to the police.
All information provided is fully researched and allows the force to focus not only on individuals and their associates, but also any other areas of crime they may be involved in.
Anyone who has information that may assist officers with the Angus investigation should call 0300 111 2222, or speak to any police officer. Information can also be passed on anonymously through Crimestoppers on 0800 555 111.